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Apple Watch Series 3 38mm Review | 126 Data compared

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  • Avg. price: ~£200
  • Screen size: 1.50 inch
  • Battery life: 0.88 day/s
  • Display type: OLED

Apple Watch Series 3 38mm review. Compare 126 technical specifications and user reviews to see how it ranks among smartwatches and if it is worth buying.

6.9

Overall score

What it is: An overall evaluation of the smartwatch's quality, based on technical analyses and user reviews.

When it matters: When you need a quick reference to identify the best Smartwatches on the market.

Score components:

90.0%

6.6

Technical Score

10.0%

9.5

User score

Good
6.6

Technical Score

What it is: An assessment of the smartwatch's technical performance, covering eight key areas: performance & hardware, software, camera, connectivity, display, battery, audio, and design.

When it matters: When you want to compare Smartwatches based on technical performance and available features.

Score components:

24.0%

5.1

Health

21.0%

9.2

Fitness

16.0%

2.7

Battery

14.0%

7.8

Smart features

12.0%

8.8

Connectivity

9.0%

6.8

Display & Design

4.0%

5.8

Hardware

Good
9.5

User score

What it is: A rating that combines user reviews and the total number of reviews received by the smartwatch

When it matters: When you want to know how a smartwatch handles daily tasks and how reliable it remains over time according to user feedback.

Score components:

70.0%

9.3

User reviews

30.0%

10

Popularity

User score:
amazon
4.7
(11740)
amazon
4.6
(5506)
amazon
4.7
(2969)

(Reviews last updated: Apr 2026)

Exceptional
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    Best prices

    Best rankings

    ?

    Available: ranking among products currently available (including other versions of this product).
    All: ranking among all products in the database.

    Technical Specifications of smartwatch Apple Watch Series 3 38mm

    Technical Score

    What it is: An assessment of the smartwatch's technical performance, covering eight key areas: performance & hardware, software, camera, connectivity, display, battery, audio, and design.

    When it matters: When you want to compare Smartwatches based on technical performance and available features.

    Score components:

    24.0%

    5.1

    Health

    21.0%

    9.2

    Fitness

    16.0%

    2.7

    Battery

    14.0%

    7.8

    Smart features

    12.0%

    8.8

    Connectivity

    9.0%

    6.8

    Display & Design

    4.0%

    5.8

    Hardware

    6.6
    Apple Watch Series 3 38mm has a technical score of 6.59 points, which is higher than 61% of smartwatches.
    User score

    What it is: A rating that combines user reviews and the total number of reviews received by the smartwatch

    When it matters: When you want to know how a smartwatch handles daily tasks and how reliable it remains over time according to user feedback.

    Score components:

    70.0%

    9.3

    User reviews

    30.0%

    10

    Popularity

    User score:
    amazon
    4.7
    (11740)
    amazon
    4.6
    (5506)
    amazon
    4.7
    (2969)

    (Reviews last updated: Apr 2026)

    9.5
    Apple Watch Series 3 38mm has a user score of 9.54 points, which is higher than 99.3% of smartwatches.
    Popularity
    What it is: An indicator based on the number of reviews received by the smartwatch.
    When it matters: When you prefer to purchase a product chosen and reviewed by many other consumers.
    10
    Apple Watch Series 3 38mm has a popularity of 10 points, which is higher than 74.7% of smartphones.
    Ratio quality/price

    What it is: An indicator that combines the smartwatch's overall rating with its cost.

    When it matters: When you are looking for a smartwatch with a good balance between quality and price.

    Score components:

    60.0%

    6.9

    Overall score

    40.0%

    9.5

    Price

    7.7
    Apple Watch Series 3 38mm has a quality-to-price ratio of 7.7 points, which is higher than 64.4% of smartphones.
    Brand name
    What it is: The company that designs, sells, and supports the watch.
    When it matters: When brand ecosystem, style, or support matters to you.

    Importance: MEDIUM

    Apple
    Heart rate monitor
    What it is: A built-in sensor that measures your pulse directly from the wrist.
    When it matters: When you want health data from your wrist during the day or night.

    Importance: HIGH

    yes
    Apple Watch Series 3 38mm includes a heart rate monitor. 90.4% of smartwatches include a heart rate monitor.
    Blood oxygen monitoring
    What it is: A wrist-based feature that estimates blood oxygen saturation over time.
    When it matters: When you want health data from your wrist during the day or night.

    Importance: HIGH

    no
    Apple Watch Series 3 38mm does not support blood oxygen monitoring. 64.4% of smartwatches support blood oxygen monitoring.
    ECG
    What it is: The ability to record a single-lead electrocardiogram from the wrist.
    When it matters: When you want health data from your wrist during the day or night.

    Importance: HIGH

    no
    Apple Watch Series 3 38mm does not support ECG. 15.1% of smartwatches support ECG.
    Availability may vary by region or model version. May require a compatible phone, software version, or app setup.
    Irregular heart rate warnings
    What it is: Notifications that flag heart-rate patterns which appear unusually irregular.
    When it matters: When you want health data from your wrist during the day or night.

    Importance: MEDIUM

    yes
    Apple Watch Series 3 38mm supports irregular heart rate warnings. 43.7% of smartwatches support irregular heart rate warnings.
    Show more
    Accelerometer
    What it is: A motion sensor that measures acceleration, steps, gestures, and general movement.
    When it matters: When you track workouts and want better training data.

    Importance: MEDIUM

    yes
    Apple Watch Series 3 38mm includes an accelerometer. 99.1% of smartwatches include an accelerometer.
    Barometer
    What it is: A pressure sensor used for altitude changes, elevation estimates, and weather-related context.
    When it matters: When you run, ride, hike, or navigate without relying on your phone.

    Importance: MEDIUM

    yes
    Apple Watch Series 3 38mm includes a barometer. 45.6% of smartwatches include a barometer.
    Gyroscope
    What it is: A motion sensor that measures rotation and helps interpret wrist movement more accurately.
    When it matters: When you track workouts and want better training data.

    Importance: MEDIUM

    yes
    Apple Watch Series 3 38mm includes a gyroscope. 64.6% of smartwatches include a gyroscope.
    Cadence sensor
    What it is: A sensor input used to measure step or pedal rhythm during training.
    When it matters: When you track workouts and want better training data.

    Importance: MEDIUM

    yes
    Apple Watch Series 3 38mm includes a cadence sensor. 20.1% of smartwatches include a cadence sensor.
    Cadence may require external sensor/app pairing on some models.
    Distance tracking
    What it is: The ability to measure how far you move during walks, runs, rides, or other activities.
    When it matters: When you track workouts and want better training data.

    Importance: MEDIUM

    yes
    Apple Watch Series 3 38mm supports distance tracking. 95.7% of smartwatches support distance tracking.
    Show more
    Battery life
    What it is: The typical endurance the watch can deliver on a full charge under the stated usage pattern.
    When it matters: When you do not want to charge the watch too often.

    Importance: HIGH

    Good value: >=7 days

    0.88 day/s
    Apple Watch Series 3 38mm offers a battery life of 0.88 day/s which is shorter than that of 96.1% of smartwatches and equal to that of 1.7% of smartwatches.
    Converted from roughly 18-24 hours of battery life.
    Battery life in training mode
    What it is: The expected endurance while workout tracking and related training functions are active.
    When it matters: When you do not want to charge the watch too often.

    Importance: HIGH

    Good value: >=36.8 h

    5 h
    Apple Watch Series 3 38mm lasts 5 h in training mode which is shorter than 90.7% of smartwatches and equal to that of 3.6% of smartwatches.
    Battery life with GPS on
    What it is: The expected runtime when satellite tracking stays active throughout use.
    When it matters: When you do not want to charge the watch too often.

    Importance: HIGH

    Good value: >=35 h

    5 h
    Apple Watch Series 3 38mm lasts 5 h with GPS on which is shorter than 91% of smartwatches and equal to that of 2.8% of smartwatches.
    Battery power
    What it is: The battery capacity, usually measured in milliampere-hours (mAh).
    When it matters: When you do not want to charge the watch too often.

    Importance: HIGH

    Good value: >=397 mAh

    262 mAh
    Apple Watch Series 3 38mm has a battery capacity of 262 mAh which is smaller than the batteries in 66% of smartwatches of smartwatches.
    Battery capacity varies by case size/model variant.
    Charge time
    What it is: The time needed to recharge the battery from empty to full or to a stated percentage.
    When it matters: When you want to top up the battery quickly.

    Importance: HIGH

    Good value: <=102 min

    120 min
    Apple Watch Series 3 38mm charges in 120 min which is faster than 12.9% of smartwatches and equal to the charge time of 43.4% of smartwatches.
    Approximate value from reported charging range: 120 minutes.
    Show more
    Operating system
    What it is: The software platform that runs the watch interface, apps, and core functions.
    When it matters: When you care about apps, features, and long-term support.

    Importance: HIGH

    watchOS
    Apple Watch Series 3 38mm runs watchOS which is more advanced than the operating system in 95.7% of smartwatches and the same as that in 4.3% of smartwatches.
    Software update frequency
    What it is: Shows how actively the watch is still updated: regular means ongoing updates throughout active support, occasional means updates every few months or only from time to time, and ended means active software support has mostly stopped.
    When it matters: When you care how actively the watch is still supported with fixes, patches, and new features.

    Importance: MEDIUM

    ended
    Apple Watch Series 3 38mm has ended software update support which is equal to that of 57.5% of smartwatches.
    Software support appears ended or discontinued.
    Third-party app support
    What it is: Support for installing or using apps from developers beyond the watch maker.
    When it matters: When you care about apps, features, and long-term support.

    Importance: MEDIUM

    yes
    Apple Watch Series 3 38mm supports third-party apps. 47.6% of smartwatches support third-party apps.
    Notifications
    What it is: Mirroring of calls, messages, apps, or other alerts on the watch.
    When it matters: When you want to check alerts without taking out your phone.

    Importance: MEDIUM

    yes
    Apple Watch Series 3 38mm supports notifications. 99.9% of smartwatches support notifications.
    Voice assistant support
    What it is: Support for a voice assistant that can answer queries or trigger actions from the wrist.
    When it matters: When you want to control the watch or reply without typing.

    Importance: MEDIUM

    yes
    Apple Watch Series 3 38mm supports voice assistants. 68% of smartwatches support voice assistants.
    Show more
    Cellular module
    What it is: Built-in mobile connectivity that can keep the watch online away from the phone.
    When it matters: When you want calls, messages, or data without your phone nearby.

    Importance: HIGH

    yes
    Apple Watch Series 3 38mm includes a cellular module. 17.2% of smartwatches include a cellular module.
    Cellular support may depend on LTE/GPS+Cellular variant selection.
    SIM cards
    What it is: The number or type of SIM options the watch accepts for cellular service.
    When it matters: When you want calls, messages, or data without your phone nearby.

    Importance: LOW

    Good value: eSIM support

    1
    GPS
    What it is: Built-in satellite positioning that lets the watch record location during outdoor activity.
    When it matters: When you run, ride, hike, or navigate without relying on your phone.

    Importance: HIGH

    yes
    Apple Watch Series 3 38mm supports GPS. 56.1% of smartwatches support GPS.
    Galileo support
    What it is: Support for Galileo satellites alongside other positioning systems.
    When it matters: When you run, ride, hike, or navigate without relying on your phone.

    Importance: MEDIUM

    yes
    Apple Watch Series 3 38mm supports Galileo navigation. 38.7% of smartwatches support Galileo navigation.
    Compass
    What it is: A directional sensor that helps the watch determine heading and orientation.
    When it matters: When you run, ride, hike, or navigate without relying on your phone.

    Importance: MEDIUM

    yes
    Apple Watch Series 3 38mm includes a compass. 49.3% of smartwatches include a compass.
    Show more
    Screen size
    What it is: The diagonal measurement of the visible display area, usually expressed in inches.
    When it matters: When you want the screen to be easy to read at a glance.

    Importance: HIGH

    Good value: >=1.5 inch

    1.50 inch
    Apple Watch Series 3 38mm has a screen size of 1.50 inch which is larger than the screens of 66.6% of smartwatches and equal to those of 3.3% of smartwatches.
    Some sources mention multiple/uncertain size variants.
    Display type
    What it is: The screen technology used by the watch, such as AMOLED, OLED, or memory-in-pixel LCD.
    When it matters: When you want the screen to be easy to read at a glance.

    Importance: HIGH

    OLED
    Apple Watch Series 3 38mm uses a OLED display type which is less advanced than that of 51.4% of smartwatches and the same as that of 9.7% of smartwatches.
    Retina branding.
    Resolution
    What it is: The total number of pixels available on the watch display.
    When it matters: When you want the screen to be easy to read at a glance.

    Importance: MEDIUM

    Good value: >=416 x 416

    272 x 340
    Apple Watch Series 3 38mm has a display resolution of 272 x 340 which is lower than that of 64.7% of smartwatches and equal to that of 0.2% of smartwatches.
    Pixel density
    What it is: The number of pixels packed into each inch of the display.
    When it matters: When you want the screen to be easy to read at a glance.

    Importance: MEDIUM

    Good value: >=326 ppi

    326 ppi
    Apple Watch Series 3 38mm has a pixel density of 326 ppi which is higher than that of 46.4% of smartwatches and equal to that of 8.3% of smartwatches.
    Display brightness
    What it is: The peak brightness the display can reach, usually expressed in nits.
    When it matters: When you want the screen to stay readable outdoors and in strong sunlight.

    Importance: HIGH

    Good value: >=1000 nits

    1,000 nits
    Apple Watch Series 3 38mm reaches 1000 nits nits of display brightness, which is higher than that of 59.5% of smartwatches and equal to that of 26.5% of smartwatches.
    Show more
    CPU speed
    What it is: The clock speed of the watch processor, usually expressed in GHz or MHz.
    When it matters: When you want apps and menus to feel smooth.

    Importance: MEDIUM

    Good value: Modern standard

    ?
    Processor model
    What it is: The processor model is the chipset or SoC that powers the watch's performance, connectivity, and efficiency.
    When it matters: When you care about app responsiveness, platform generation, and long-term feature support.

    Importance: LOW

    Good value: modern smartwatch chipset

    Apple S3
    Apple Watch Series 3 38mm uses the Apple S3 processor model.
    RAM
    What it is: The amount of working memory available for apps, watch faces, and background tasks.
    When it matters: When you want apps and menus to feel smooth.

    Importance: MEDIUM

    Good value: >=1 GB

    0.75 GB
    Apple Watch Series 3 38mm has 0.75 GB of RAM which is smaller than the RAM in 69.2% of smartwatches and equal to that of 3% of smartwatches.
    768 MB RAM
    Internal storage
    What it is: Built-in storage for apps, music, watch faces, and other local data.
    When it matters: When you want more room for apps, music, or offline data.

    Importance: MEDIUM

    Good value: >=8 GB

    8 GB
    Apple Watch Series 3 38mm uses 8 GB for internal storage which is larger than that of 67.6% of smartwatches and equal to that of 12.1% of smartwatches.
    External memory slot
    What it is: A slot for expandable storage such as a memory card, if the watch provides one.
    When it matters: When you want more room for apps, music, or offline data.

    Importance: LOW

    no
    Apple Watch Series 3 38mm does not include an external memory slot. 0.3% of smartwatches include an external memory slot.
    Show more

    Apple Watch Series 3 38mm vs the average smartwatch

    • Has cellular module
      Apple Watch Series 338mm includes a cellular module, the average smartwatch does not. 17.2% of smartwatches include a cellular module.
      Cellular support may depend on LTE/GPS+Cellular variant selection.
      What it is: Built-in mobile connectivity that can keep the watch online away from the phone.
      When it matters: When you want calls, messages, or data without your phone nearby.

      Importance: HIGH

      Apple Watch Series 338mm includes a cellular module, the average smartwatch does not. 17.2% of smartwatches include a cellular module.
    • More advanced operating system
      Apple Watch Series 338mm runs a more advanced operating system than the average smartwatch (watchOS vs Proprietary OS).
      What it is: The software platform that runs the watch interface, apps, and core functions.
      When it matters: When you care about apps, features, and long-term support.

      Importance: HIGH

      Apple Watch Series 338mm runs a more advanced operating system than the average smartwatch (watchOS vs Proprietary OS).watchOS vs Proprietary OS
    • Includes wireless charging
      Apple Watch Series 338mm supports wireless charging, the average smartwatch does not. 24.9% of smartwatches support wireless charging.
      What it is: Support for recharging the watch through a charging pad, puck, or other cable-free method.
      When it matters: When you want to top up the battery quickly.

      Importance: MEDIUM

      Apple Watch Series 338mm supports wireless charging, the average smartwatch does not. 24.9% of smartwatches support wireless charging.
    • Has NFC
      Apple Watch Series 338mm supports NFC, the average smartwatch does not. 42.5% of smartwatches support NFC.
      What it is: Near-field communication hardware used for payments, pairing, or quick tap-based actions.
      When it matters: When you want to pay quickly or pair devices with a tap.

      Importance: HIGH

      Apple Watch Series 338mm supports NFC, the average smartwatch does not. 42.5% of smartwatches support NFC.
    • Has HRV tracking
      Apple Watch Series 338mm supports HRV tracking, the average smartwatch does not. 38.2% of smartwatches support HRV tracking.
      What it is: Measurement of heart-rate variability, the change in timing between heartbeats.
      When it matters: When you want health data from your wrist during the day or night.

      Importance: MEDIUM

      Apple Watch Series 338mm supports HRV tracking, the average smartwatch does not. 38.2% of smartwatches support HRV tracking.
    • Supports Emergency SOS
      Apple Watch Series 338mm includes Emergency SOS, the average smartwatch does not. 42.4% of smartwatches include Emergency SOS.
      What it is: An emergency feature that can contact help or alert trusted people from the watch.
      When it matters: When you want extra help in an emergency.

      Importance: HIGH

      Apple Watch Series 338mm includes Emergency SOS, the average smartwatch does not. 42.4% of smartwatches include Emergency SOS.
    • Supports VO2 max
      Apple Watch Series 338mm measures VO2 max, the average smartwatch does not. 49.3% of smartwatches measure VO2 max.
      What it is: Estimated VO2 max, a fitness metric linked to aerobic capacity and endurance.
      When it matters: When you track workouts and want better training data.

      Importance: MEDIUM

      Apple Watch Series 338mm measures VO2 max, the average smartwatch does not. 49.3% of smartwatches measure VO2 max.
    • Includes maps
      Apple Watch Series 338mm supports maps, the average smartwatch does not. 32.2% of smartwatches support maps.
      What it is: The ability to view maps, navigation guidance, or route layouts on the watch.
      When it matters: When you run, ride, hike, or navigate without relying on your phone.

      Importance: MEDIUM

      Apple Watch Series 338mm supports maps, the average smartwatch does not. 32.2% of smartwatches support maps.
    • Has HRV tracking
      Apple Watch Series 338mm supports HRV tracking, the average smartwatch does not. 38.2% of smartwatches support HRV tracking.
    • Supports VO2 max
      Apple Watch Series 338mm measures VO2 max, the average smartwatch does not. 49.3% of smartwatches measure VO2 max.
    • Has irregular heart alerts
      Apple Watch Series 338mm supports irregular heart rate warnings, the average smartwatch does not. 43.7% of smartwatches support irregular heart rate warnings.
    • Has barometer
      Apple Watch Series 338mm includes a barometer, the average smartwatch does not. 45.6% of smartwatches include a barometer.
    • Has cadence sensor
      Apple Watch Series 338mm includes a cadence sensor, the average smartwatch does not. 20.1% of smartwatches include a cadence sensor.
    • Has external HR monitor
      Apple Watch Series 338mm supports external heart rate monitor compatibility, the average smartwatch does not. 41.3% of smartwatches support external heart rate monitor compatibility.
    • Includes wireless charging
      Apple Watch Series 338mm supports wireless charging, the average smartwatch does not. 24.9% of smartwatches support wireless charging.
    • Has cellular module
      Apple Watch Series 338mm includes a cellular module, the average smartwatch does not. 17.2% of smartwatches include a cellular module.
    • Has NFC
      Apple Watch Series 338mm supports NFC, the average smartwatch does not. 42.5% of smartwatches support NFC.
    • Includes maps
      Apple Watch Series 338mm supports maps, the average smartwatch does not. 32.2% of smartwatches support maps.
    • Has compass
      Apple Watch Series 338mm includes a compass, the average smartwatch does not. 49.3% of smartwatches include a compass.
    • Supports Wi-Fi
      Apple Watch Series 338mm supports Wi-Fi, the average smartwatch does not. 43.4% of smartwatches support Wi-Fi.
    • Supports Galileo
      Apple Watch Series 338mm supports Galileo navigation, the average smartwatch does not. 38.7% of smartwatches support Galileo navigation.
    • 400 nits higher display brightness
      Apple Watch Series 338mm has higher display brightness than the average smartwatch (1,000 nits nits vs 600 nits nits). The average smartwatch reaches 600 nits nits.
    • 18.3 g lighter weight
      Apple Watch Series 338mm is lighter than the average smartwatch (26.7 g vs 45 g). The average smartwatch weighs 45 g.
    • Better case material
      Apple Watch Series 338mm uses aluminum, stainless steel, ceramic for the case material, while the average smartwatch uses polycarbonate.
    • 0.1 inch larger screen size
      Apple Watch Series 338mm has a larger screen size than the average smartwatch (1.5 inch vs 1.40 inch). The average smartwatch screen is 1.40 inch.
    • 8.7 mm narrower watch width
      Apple Watch Series 338mm is narrower than the average smartwatch (33.3 mm vs 42.0 mm). The average smartwatch width is 42.0 mm.
    • More advanced operating system
      Apple Watch Series 338mm runs a more advanced operating system than the average smartwatch (watchOS vs Proprietary OS).
    • Supports Emergency SOS
      Apple Watch Series 338mm includes Emergency SOS, the average smartwatch does not. 42.4% of smartwatches include Emergency SOS.
    • Supports third-party apps
      Apple Watch Series 338mm supports third-party apps, the average smartwatch does not. 47.6% of smartwatches support third-party apps.
    • More advanced processor model
      Apple Watch Series 338mm uses the Apple S3 processor model, while the average smartwatch uses Snapdragon 400.
    • 4 GB more storage
      Apple Watch Series 338mm offers more internal storage than the average smartwatch (8 GB vs 4 GB). The average smartwatch provides 4 GB of storage.

    Total
    Overall
    Health
    Fitness
    Battery
    Connectivity
    Display & Design
    Smart features
    Hardware
    • No blood oxygen
      Apple Watch Series 338mm does not support blood oxygen monitoring, the average smartwatch does. 64.4% of smartwatches support blood oxygen monitoring.
    • No stress monitoring
      Apple Watch Series 338mm does not support stress monitoring, the average smartwatch does. 65.4% of smartwatches support stress monitoring.
      Some stress features may depend on third-party apps.
    • 5,534 m lower max altitude
      Apple Watch Series 338mm supports a lower maximum altitude than the average smartwatch (3,000 m vs 8,534 m). The average smartwatch reaches 8,534 m.
    • 6.12 day/s shorter battery life
      Apple Watch Series 338mm offers 0.9 day/s of battery life, while the average smartwatch offers 7 day/s.
      Converted from roughly 18-24 hours of battery life.
    • 15 h shorter GPS battery life
      Apple Watch Series 338mm lasts less with GPS on than the average smartwatch (5 h vs 20 h). The average smartwatch lasts 20 h.
    • No low power mode
      Apple Watch Series 338mm does not include a low power mode, the average smartwatch does. 93.6% of smartwatches include a low power mode.
    • 15 h shorter training battery life
      Apple Watch Series 338mm lasts less in training mode than the average smartwatch (5 h vs 20 h). The average smartwatch lasts 20 h.
    • 38 mAh smaller battery capacity
      Apple Watch Series 338mm has a smaller battery capacity than the average smartwatch (262 mAh vs 300 mAh). The average smartwatch battery is 300 mAh.
      Battery capacity varies by case size/model variant.
    • Not compatible with Android
      Apple Watch Series 338mm is not compatible with Android, the average smartwatch is. 95.3% of smartwatches are compatible with Android.
      Android support may be limited without iPhone pairing on some models.
    • Older Bluetooth version
      Apple Watch Series 338mm supports an older Bluetooth version than the average smartwatch (4.2 vs 5.0). The average smartwatch uses 5.0.
    • No always-on display
      Apple Watch Series 338mm does not have an always-on display, the average smartwatch does. 66.4% of smartwatches have an always-on display.
    • Basic display type
      Apple Watch Series 338mm uses OLED display technology, while the average smartwatch features AMOLED.
      Retina branding.
    • Lower resolution
      Apple Watch Series 338mm has a display resolution of 272x 340, while the average smartwatch reaches 352x 430.
    • No smart alarm
      Apple Watch Series 338mm does not support a smart alarm, the average smartwatch does. 52.7% of smartwatches support this feature.
      No native smart alarm; third-party app required.
    • No gesture control
      Apple Watch Series 338mm does not support gesture control, the average smartwatch does. 78.1% of smartwatches support gesture control.
    • 0.25 GB less RAM
      Apple Watch Series 338mm has less RAM than the average smartwatch (0.8 GB vs 1 GB). The average smartwatch includes 1 GB of RAM.
      768 MB RAM
    • 4 year/s older release date
      Apple Watch Series 338mm is an older model than the average smartwatch (2,017 vs 2,021). The average smartwatch was released in 2,021.
      September 2,017
    • No blood oxygen
      Apple Watch Series 338mm does not support blood oxygen monitoring, the average smartwatch does. 64.4% of smartwatches support blood oxygen monitoring.
      What it is: A wrist-based feature that estimates blood oxygen saturation over time.
      When it matters: When you want health data from your wrist during the day or night.

      Importance: HIGH

      Apple Watch Series 338mm does not support blood oxygen monitoring, the average smartwatch does. 64.4% of smartwatches support blood oxygen monitoring.
    • No always-on display
      Apple Watch Series 338mm does not have an always-on display, the average smartwatch does. 66.4% of smartwatches have an always-on display.
      What it is: A display mode that keeps key information visible even when the watch is idle.
      When it matters: When you want the screen to be easy to read at a glance.

      Importance: HIGH

      Apple Watch Series 338mm does not have an always-on display, the average smartwatch does. 66.4% of smartwatches have an always-on display.
    • No stress monitoring
      Apple Watch Series 338mm does not support stress monitoring, the average smartwatch does. 65.4% of smartwatches support stress monitoring.
      Some stress features may depend on third-party apps.
      What it is: Stress estimates derived from heart rate, HRV, or similar body signals.
      When it matters: When you want health data from your wrist during the day or night.

      Importance: HIGH

      Apple Watch Series 338mm does not support stress monitoring, the average smartwatch does. 65.4% of smartwatches support stress monitoring.
    • 6.12 day/s shorter battery life
      Apple Watch Series 338mm offers 0.9 day/s of battery life, while the average smartwatch offers 7 day/s.
      Converted from roughly 18-24 hours of battery life.
      What it is: The typical endurance the watch can deliver on a full charge under the stated usage pattern.
      When it matters: When you do not want to charge the watch too often.

      Importance: HIGH

      Good value: >=7 days

      Apple Watch Series 338mm offers 0.9 day/s of battery life, while the average smartwatch offers 7 day/s.0.88 day/s vs 7 day/s
    • Not compatible with Android
      Apple Watch Series 338mm is not compatible with Android, the average smartwatch is. 95.3% of smartwatches are compatible with Android.
      Android support may be limited without iPhone pairing on some models.
      What it is: Shows how well the smartwatch works with Android pairing, syncing, and core features.
      When it matters: When you use an Android phone and want the watch to pair, sync, and keep its main features working properly.

      Importance: MEDIUM

      Apple Watch Series 338mm is not compatible with Android, the average smartwatch is. 95.3% of smartwatches are compatible with Android.
    • 15 h shorter GPS battery life
      Apple Watch Series 338mm lasts less with GPS on than the average smartwatch (5 h vs 20 h). The average smartwatch lasts 20 h.
      What it is: The expected runtime when satellite tracking stays active throughout use.
      When it matters: When you do not want to charge the watch too often.

      Importance: HIGH

      Good value: >=35 h

      Apple Watch Series 338mm lasts less with GPS on than the average smartwatch (5 h vs 20 h). The average smartwatch lasts 20 h.5 h vs 20 h
    • No low power mode
      Apple Watch Series 338mm does not include a low power mode, the average smartwatch does. 93.6% of smartwatches include a low power mode.
      What it is: A power-saving mode that reduces features or performance to stretch battery life.
      When it matters: When you do not want to charge the watch too often.

      Importance: MEDIUM

      Apple Watch Series 338mm does not include a low power mode, the average smartwatch does. 93.6% of smartwatches include a low power mode.
    • Basic display type
      Apple Watch Series 338mm uses OLED display technology, while the average smartwatch features AMOLED.
      Retina branding.
      What it is: The screen technology used by the watch, such as AMOLED, OLED, or memory-in-pixel LCD.
      When it matters: When you want the screen to be easy to read at a glance.

      Importance: HIGH

      Apple Watch Series 338mm uses OLED display technology, while the average smartwatch features AMOLED.OLED vs AMOLED
    Total
    Overall
    Health
    Fitness
    Battery
    Connectivity
    Display & Design
    Smart features
    Hardware

    Graphic comparison of Apple Watch Series 3 38mm and other Smartwatches

    Attribute category
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    Third-party reviews

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    5506 Reviews
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    2969 Reviews

    (Reviews last updated: Apr 2026)

    What customers like about Apple Watch Series 3 38mm?

    • Integrated GPS and barometric altimeter for accurate fitness and elevation tracking.
    • Waterproof design suitable for swimming and water sports.
    • Clear, vibrant OLED display with rich colours and deep blacks.
    • S3 processor provides smooth navigation and snappier app launches compared to previous generations.
    • Excellent call quality with a loud speaker and sensitive microphone.
    • Streamlined user experience that integrates deeply with the iPhone ecosystem.

    What customers dislike about Apple Watch Series 3 38mm?

    • Battery life is relatively poor, often requiring daily charging and draining rapidly when using LTE or GPS.
    • Lack of an 'always-on' display requires a wrist flick or tap to view the time.
    • Limited long-term software support; no longer supports modern watchOS versions.
    • Smaller 38mm screen can be more difficult to navigate and view text compared to larger models.
    • Cellular connectivity can be unreliable and incurs additional monthly service fees.
    • Lack of advanced health sensors like ECG, blood oxygen, or fall detection found in newer models.

    Expert reviews

    T
    techmanity.co.uk
    04/08/2018
    Apple Watch Series 3 with Cellular: 8 Month Review

    The review highlights the Apple Watch Series 3 as a transformative device featuring a fast processor, vibrant display, and 50-metre water resistance. Key pros include the convenience of cellular connectivity for a 'freeing' experience, along with motivating activity tracking features, such as digital medals and social competitions. However, the review notes significant cons,...Read more

    T
    tomsguide.com
    28/01/2021
    Apple Watch Series 3 review | Tom's Guide

    The Apple Watch Series 3 introduces built-in cellular LTE, offering the freedom to make calls and stream music without an iPhone, paired with a bright 1,000-nit OLED display and 50-meter water resistance. Performance is boosted by the new S3 processor, enabling faster app launches and a more responsive Siri, while GPS and a barometric altimeter enhance fitness tracking capabilities....Read more

    D
    dcrainmaker.com
    07/11/2017
    Apple Watch Series 3: Sport & Fitness In-Depth Review For more detailed analysis on the Apple Watch Series 3, you can explore the links listed above.

    The Apple Watch Series 3 (LTE) enables significant device independence by handling calls, texts, and Apple Music streaming without a tethered phone, making it ideal for safety and convenience during workouts. Ray Maker highlights improved hardware speed and the addition of a barometric altimeter for accurate elevation tracking, alongside seamless cellular integration for athletes....Read more

    T
    techradar.com
    16/06/2021
    Apple Watch 3 review

    The Apple Watch Series 3 is highlighted by TechRadar as a robust fitness companion, featuring built-in GPS and a water-resistant design suitable for swimming. A major pro is its impressive battery life, which can exceed 50 hours on the non-LTE model, though a con is the lack of an always-on display. Performance is bolstered by an upgraded, snappier chipset, though minor delays in...Read more

    G
    gq.com
    21/09/2017
    Apple Watch Series 3 Review: The Smartwatch that Could...

    The GQ review of the Apple Watch Series 3 highlights the, device's shift toward independence from the iPhone, enabled primarily by new LTE cellular connectivity. This feature allows users to make calls, send texts, and stream music while leaving their phone behind, offering a "fully present" experience during daily activities. Key improvements include a faster S3 processor for a...Read more

    M
    macworld.com
    05/10/2017
    Apple Watch Series 3 (2017) review - Macworld

    Macworld's review of the Apple Watch Series 3 (LTE) highlights the addition of cellular connectivity as a "game-changing" feature for independence, while retaining the familiar design of previous models. Key performance improvements include the fast S3 processor and a barometric altimeter, although the device is best used for quick tasks rather than full iPhone replacement. While...Read more

    E
    express.co.uk
    24/09/2017
    Apple Watch Series 3 review - Ticks all of the right boxes if you are ...

    The Apple Watch Series 3 is hailed by the Express as the firm's best wearable, driven by built-in cellular connectivity that allows users to receive texts, calls, and emails without an iPhone. This newfound independence from the smartphone offers significant freedom for daily use, effectively cutting the cord for essential, on-the-go communications. Technical advancements include a...Read more

    T
    t3.com
    25/04/2022
    Apple Watch Series 3 review - T3

    The Apple Watch Series 3 is identified by T3 as a high-quality, budget-friendly lifestyle device featuring a bright 1.65-inch OLED display, a comfortable, premium design, and smooth performance powered by the S3 chip. Key advantages include comprehensive, accurate fitness tracking, full waterproofing, and seamless integration with iPhone features like Apple Pay, music, and...Read more

    U
    uk.pcmag.com
    16/10/2019
    Apple Watch Series 3 Review - Review 2019

    The Apple Watch Series 3 introduced LTE cellular connectivity, allowing for phone calls, texts, and music streaming without an iPhone, powered by a faster S3 processor and W2 chip. While maintaining a similar design to its predecessor, it added a barometric altimeter for better elevation tracking. Pros include a compact design, clear call quality, and advanced health metrics like...Read more

    T
    techadvisor.com
    04/10/2017
    Apple Watch Series 3 review: Phoning it in

    The Apple Watch Series 3 is highlighted as a 'bridge product' with impressive technical execution, successfully integrating LTE connectivity and an eSIM into a compact frame with only a 0.2mm thickness increase. Key advantages include improved, clear phone calls, faster independent Siri responses, and a fluid, responsive user experience driven by the 70% faster S3 processor....Read more

    A
    arstechnica.com
    27/09/2017
    Apple Watch Series 3 review: LTE comes with high monetary and mental costs

    The Ars Technica review characterizes the Apple Watch Series 3 as a powerful but flawed step toward cellular independence, recommending the non-LTE version due to significant connectivity issues. While the S3 processor offers faster performance, and features like a barometric altimeter and improved Siri improve the experience, the cellular model suffers from severe "teething pains"....Read more

    I
    imore.com
    23/09/2017
    Apple Watch Series 3 Hands On: Apple throws down the small ... T3 +12For more details, visit Tom's Guide.

    The iMore hands-on review of the Apple Watch Series 3 highlights the introduction of standalone LTE connectivity and a faster S3 processor as major, game-changing upgrades. Key pros include the instantaneous, revamped Siri experience, the new comfortable Nylon Sport Loop, and a barometric altimeter for precise fitness tracking. However, the review notes significant cons regarding...Read more

    M
    mirror.co.uk
    18/09/2017
    Apple Watch Series 3 hands-on review: Who needs an iPhone when you have a computer on your wrist?

    The Mirror's hands-on review characterizes the Apple Watch Series 3 as a significant leap forward, finally fulfilling the promise of a "liberating" smartwatch through built-in cellular connectivity. Key advantages include the 4G/LTE eSIM, allowing users to leave their iPhone behind for calls and messages, paired with a faster processor and improved, proactive heart rate monitoring....Read more

    N
    netzwelt.de
    11/09/2019
    Apple Watch Series 3 im Test: Dank Apple Watch 5 jetzt ein Schnäppchen

    The Netzwelt review highlights the Apple Watch Series 3 as a significant performance leap, powered by the S3 processor and W2 chip for a much smoother user interface. Pros include a bright OLED display, improved speed, and a barometric altimeter, while the main con is limited battery life, especially when using cellular or GPS features. The review notes that the optional LTE...Read more

    (Translated)Show original
    C
    chip.de
    11/11/2017
    Apple Watch Series 3 (LTE) im Test (Note: Tests general Series 3 features applicable to both sizes)

    The Apple Watch Series 3 LTE (42mm) achieves a perfect 100% in features, driven by its integrated eSIM and LTE connectivity, allowing for independent calling, messaging, and music streaming. It offers a faster user experience via the S3 processor, 16GB of storage, and a new barometric altimeter for enhanced elevation tracking. Key pros include a robust health suite with enhanced...Read more

    (Translated)Show original
    C
    computerbild.de
    15/06/2022
    Apple Watch 3: Test der ausgemusterten Smartwatch fürs iPhone

    The Apple Watch Series 3 is highlighted as a significant step forward in making the smartwatch more independent from the iPhone, primarily due to the introduction of an optional cellular (LTE) version with built-in eSIM functionality. A notable performance upgrade comes from the S3 dual-core processor, which is 70% faster than its predecessor, resulting in snappier app launches and...Read more

    (Translated)Show original
    S
    stern.de
    20/09/2017
    Apple Watch Series 3 Test: Die letzte Hürde ist gefallen(www.galaxus.de) | 16.11.2017 | Apple Watch Series 3 ausgepackt: Die Uhr, die sich anders anfü...

    The Apple Watch Series 3 review emphasizes the device's independence from the iPhone, enabled by new LTE connectivity, along with a faster S3 processor and a barometric altimeter for improved tracking [1.1]. Key advantages include smoother app performance, a functional 'talking' Siri, and 16GB of storage for the LTE model [1.1]. Conversely, the review notes significant drawbacks,...Read more

    (Translated)Show original
    L
    lesnumeriques.com
    Date de test d'origine (Archive)
    Apple Watch Series 3 : meilleur prix - Les Numériques

    The Apple Watch Series 3 review from Les Numériques highlights its impeccable construction, bright OLED Retina display, and a fluid interface driven by the S3 processor. The inclusion of a barometric altimeter and GPS solidifies its role as a strong fitness tracker. On the downside, daily charging is required, especially when using GPS or LTE, and the wrist-flick gesture for waking...Read more

    (Translated)Show original
    L
    leclaireur.fnac.com
    12 novembre 2017
    Apple Watch Series 3 Cellular (4G) Review: Truly Independent, but Watch the Battery Life

    The Apple Watch Series 3 Cellular enables true independence from the iPhone via 4G, featuring a faster S3 processor, vocal Siri, and 16GB of storage. While offering improved responsiveness and design consistency with the series 2, the primary pro is cellular freedom, though it requires a specific operator plan. However, the main con is severely reduced battery life when using 4G,...Read more

    (Translated)Show original
    L
    leclaireur.fnac.com
    17 octobre 2017
    Test de l'Apple Watch Series 3 : enfin libérée

    The Apple Watch Series 3 offers improved independence from the iPhone, driven by the faster S3 dual-core processor and the addition of a barometric altimeter for better activity tracking. Key pros include exceptional, bright OLED display performance, 50-meter water resistance, and deep Apple ecosystem integration. However, cons include a lack of automatic sport detection and rapid...Read more

    (Translated)Show original
    E
    europe1.fr
    26/09/2017
    TEST - L'Apple Watch Series 3, enfin autonome

    The Apple Watch Series 3 is reviewed as a major turning point, driven by its new 4G LTE connectivity that allows independence from the iPhone for calls, messages, and music streaming. While the design remains similar to predecessors—with a slightly thicker chassis and a red dot for the 'Cellular' model—it maintains a versatile, comfortable, and, in this reviewer's opinion,...Read more

    (Translated)Show original
    F
    fr.ign.com
    23/10/2017
    Apple Watch Series 3 (GPS) Review: A reliable choice even without eSIM

    The IGN France review characterizes the Apple Watch Series 3 (GPS) as a reliable, high-value entry point into the Apple ecosystem, offering a fluid experience via an upgraded processor despite lacking cellular capabilities. Key advantages include the fast S3 dual-core processor, improved navigation, a barometric altimeter for precise elevation tracking, and a swim-proof design....Read more

    (Translated)Show original
    S
    sport-passion.fr
    15/12/2017
    Apple Watch 3 : test et avis. Une montre téléphone 4G.

    The Apple Watch Series 3 offers improved performance via a dual-core processor and introduces 4G LTE connectivity for independent operation, retaining a design similar to the Series 2 with a 0.25mm thicker profile on cellular models. Key fitness features include a barometric altimeter for elevation tracking, 50-meter water resistance for swimming, and enhanced heart rate monitoring...Read more

    (Translated)Show original
    L
    lesnumeriques.com
    01/11/2017
    Test Apple Watch Series 3 : plus mobile mais pas vraiment plus...

    Les Numériques describes the Apple Watch Series 3 as a significant evolution with impeccable construction, highly responsive OS, and excellent display legibility. Key pros include refined fitness tracking, an added barometric altimeter for elevation, and effective Siri integration. The 4G cellular connectivity offers freedom but significantly drains the battery, roughly halving the...Read more

    (Translated)Show original
    H
    hablandodemanzanas.com
    08/12/2017
    Análisis Apple Watch Series 3, ¿merece la pena? - Hablando de Manzanas

    The Apple Watch Series 3 represents a significant evolution with cellular connectivity and a faster S3 processor, though it retains the familiar design and OLED display of its predecessor. Key improvements include enhanced responsiveness, enabling Siri to speak and faster app launches, alongside a new barometric altimeter for precise elevation tracking. The LTE capability is a major...Read more

    (Translated)Show original
    C
    computerhoy.20minutos.es
    14/10/2017
    Apple Watch Series 3, análisis y opinión - Computer Hoy

    The Apple Watch Series 3 represents a significant, faster iteration in Apple’s wearable lineup, driven by the S3 processor and W2 chip that boost performance by up to 70%. Key advantages include the introduction of LTE cellular connectivity for independent music streaming and calls, alongside a new barometric altimeter for precise elevation tracking during fitness activities....Read more

    (Translated)Show original
    C
    chollodeportes.com
    25/11/2021
    Apple Watch Series 3: análisis del smartwatch más vendido - CholloDeportes

    The Apple Watch Series 3 offers improved performance via its S3 processor and introduces optional LTE connectivity in the same square design, according to Chollodeportes. Key advantages noted include faster app performance and the addition of a barometric altimeter for better fitness tracking. Chollodeportes highlights the device's enhanced swim-proof design and accurate GPS/heart...Read more

    (Translated)Show original
    Q
    qualescegliere.it
    01/12/2017
    Recensione Apple Watch Series 3 - QualeScegliere.it

    The Apple Watch Series 3 is highlighted by QualeScegliere.it as a high-end smartwatch featuring a high-quality Retina OLED display, available in 38mm and 42mm sizes, with an S3 dual-core chip that offers a 70% faster, more fluid user experience. Key pros include an accurate integrated GPS, excellent water resistance up to 50 meters, and robust fitness tracking, including heart rate...Read more

    (Translated)Show original
    V
    video.corriere.it
    20/09/2017
    Apple Watch Series 3 (Gps), la recensione: ora Siri parla

    The Apple Watch Series 3 offers significant performance upgrades, including a 70% faster S3 processor, an integrated GPS, and a functional built-in speaker that allows Siri to deliver audible responses. This, combined with improved water resistance, makes it a more capable, independent, and responsive fitness device compared to its predecessors. Key pros include the precise,...Read more

    (Translated)Show original
    S
    saggiamente.com
    15/01/2018
    Recensione: Apple Watch Series 3, diverso ma pur sempre lo stesso

    The Saggiamente.com review characterizes the Apple Watch Series 3 as an evolutionary update, maintaining a familiar, functional square design while significantly improving performance with the dual-core S3 chip. Key pros include the addition of a barometric altimeter and GPS for enhanced fitness tracking, alongside cellular LTE connectivity that provides new freedom from the iPhone....Read more

    (Translated)Show original
    M
    macitynet.it
    12/10/2017
    Recensione di Apple Watch 3, la prova di una settimana di Macitynet

    The Apple Watch Series 3 is presented as a mature device, featuring a 70% faster S3 processor for fluid performance, integrated LTE connectivity, and a barometric altimeter. It enables independence from the iPhone, allowing users to make calls, stream music, and use Siri—now capable of voice feedback—directly from the watch. Despite improved performance, the review highlights...Read more

    (Translated)Show original
    A
    andreagaleazzi.com
    13/10/2017
    Recensione Apple Watch 3 - Andrea Galeazzi

    Andrea Galeazzi's review highlights the Apple Watch Series 3 as a significant, albeit internal, hardware upgrade featuring the faster S3 processor, a barometric altimeter for better fitness tracking, and the efficient W2 wireless chip. The design remains unchanged, but the interface is notably more fluid, and Siri can now respond with a voice. A major pro is the impressive battery...Read more

    (Translated)Show original
    T
    tweakers.net
    08/05/2018
    Apple Watch Series 3 - Reviews - Tweakers

    The Apple Watch Series 3 introduced an S3 dual-core chip that offers roughly 70% faster performance, resulting in a more responsive user interface compared to previous models. Key features include a built-in barometric altimeter for improved elevation tracking and a bright 1,000-nit OLED display. While maintaining the same design as the Series 2, it retains a 50-meter...Read more

    (Translated)Show original
    T
    test-aankoop.be
    N/A
    APPLE Watch Series 3 (38mm) test en review - Testaankoop

    The Apple Watch Series 3 (38mm) features a vibrant 1.65-inch Retina OLED display and is powered by the S3 dual-core processor, providing a 70% speed boost over its predecessor [T3]. Its 11.4mm thick design is considered comfortable for all-day wear, particularly for those with smaller wrists, and is a robust, budget-friendly entry point into the Apple ecosystem [T3]. Key strengths...Read more

    (Translated)Show original
    G
    global.techradar.com
    23/06/2019
    Apple Watch 3 review - TechRadar

    The Apple Watch Series 3 introduced LTE connectivity, enabling calls, texting, and music streaming without an iPhone, while featuring an improved OLED screen and robust haptics [1, 2]. Key pros include enhanced fitness tracking with built-in GPS and a water-resistant design suitable for swimming. However, the review highlights significant cons, particularly fast battery depletion...Read more

    (Translated)Show original
    I
    iphoned.nl
    20/04/2018
    Tweede indruk: de Apple Watch Series 3 na zes maanden

    An iPhoned.nl second-impression review of the Apple Watch Series 3 after six months highlights its evolution into a mature, essential device that retains high usability, thanks largely to the fast S3 processor. Pros include improved fluidity, reliable performance, and the freedom offered by LTE connectivity for calls and music without an iPhone. However, cons include significant...Read more

    (Translated)Show original
    X
    xgn.nl
    11/10/2017
    Apple Watch series 3 Review - Sneller, maar ook ... - XGN

    The Apple Watch Series 3 offers significant advancements over predecessors, featuring built-in LTE connectivity and a faster S3 processor for improved, independent functionality. Key benefits include a 70% faster performance than Series 2, a vibrant OLED display, a new barometric altimeter for elevation tracking, and 50-meter water resistance. Fitness tracking is enhanced with...Read more

    (Translated)Show original
    I
    iculture.nl
    05/10/2017
    Apple Watch Series 3 review: Prima update, maar grootste vernieuwing ontbreekt

    The iCulture review characterizes the Apple Watch Series 3 as a major step forward, driven by the significantly faster S3 dual-core processor and enhanced fitness features like a barometric altimeter. Key improvements include a more responsive interface and the ability for Siri to speak through the watch speaker. While the GPS and 50-meter water resistance are lauded, the review...Read more

    (Translated)Show original

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