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Samsung Galaxy Watch 3 45mm Review | 126 Data compared

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  • Avg. price: ~£400
  • Screen size: 1.40 inch
  • Battery life: 2 day/s
  • Display type: AMOLED

Samsung Galaxy Watch 3 45mm review. Compare 126 technical specifications and user reviews to see how it ranks among smartwatches and if it is worth buying.

8.0

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%

7.9

Technical Score

10.0%

9.2

User score

Excellent
7.9

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%

7.9

Health

21.0%

9.1

Fitness

16.0%

5.4

Battery

14.0%

8.4

Smart features

12.0%

8.2

Connectivity

9.0%

8.8

Display & Design

4.0%

6.5

Hardware

Very good
9.2

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%

8.9

User reviews

30.0%

10

Popularity

User score:
amazon
4.5
(1778)
amazon
4.3
(344)
amazon
4.2
(59)

(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 Samsung Galaxy Watch 3 45mm

    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%

    7.9

    Health

    21.0%

    9.1

    Fitness

    16.0%

    5.4

    Battery

    14.0%

    8.4

    Smart features

    12.0%

    8.2

    Connectivity

    9.0%

    8.8

    Display & Design

    4.0%

    6.5

    Hardware

    7.9
    Samsung Galaxy Watch 3 45mm has a technical score of 7.87 points, which is higher than 83.6% 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%

    8.9

    User reviews

    30.0%

    10

    Popularity

    User score:
    amazon
    4.5
    (1778)
    amazon
    4.3
    (344)
    amazon
    4.2
    (59)

    (Reviews last updated: Apr 2026)

    9.2
    Samsung Galaxy Watch 3 45mm has a user score of 9.24 points, which is higher than 95.5% 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
    Samsung Galaxy Watch 3 45mm 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%

    8.0

    Overall score

    40.0%

    8.4

    Price

    8.1
    Samsung Galaxy Watch 3 45mm has a quality-to-price ratio of 8.1 points, which is higher than 78% 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

    Samsung
    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
    Samsung Galaxy Watch 3 45mm 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

    yes
    Samsung Galaxy Watch 3 45mm supports 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

    yes
    Samsung Galaxy Watch 3 45mm supports 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
    Samsung Galaxy Watch 3 45mm 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
    Samsung Galaxy Watch 3 45mm 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
    Samsung Galaxy Watch 3 45mm 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
    Samsung Galaxy Watch 3 45mm 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

    no
    Samsung Galaxy Watch 3 45mm does not include a cadence sensor. 20.1% of smartwatches include a cadence sensor.
    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
    Samsung Galaxy Watch 3 45mm 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

    2 day/s
    Samsung Galaxy Watch 3 45mm offers a battery life of 2 day/s which is shorter than that of 79.8% of smartwatches and equal to that of 4.6% of smartwatches.
    1.5 with heavy use/aod.
    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

    29 h
    Samsung Galaxy Watch 3 45mm lasts 29 h in training mode which is longer than 69.8% of smartwatches and equal to that of 0.2% of smartwatches.
    Up to 43-80 hours for typical use, but specific continuous training mode.
    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

    12.5 h
    Samsung Galaxy Watch 3 45mm lasts 12.5 h with GPS on which is shorter than 67.4% of smartwatches and equal to that of 0.3% 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

    305 mAh
    Samsung Galaxy Watch 3 45mm has a battery capacity of 305 mAh which is larger than the batteries in 52.1% of smartwatches and equal to those in 1.3% 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

    ?
    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

    Tizen
    Samsung Galaxy Watch 3 45mm runs Tizen which is more advanced than the operating system in 55.1% of smartwatches and the same as that in 2.3% 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
    Samsung Galaxy Watch 3 45mm 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
    Samsung Galaxy Watch 3 45mm 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
    Samsung Galaxy Watch 3 45mm 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
    Samsung Galaxy Watch 3 45mm 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
    Samsung Galaxy Watch 3 45mm includes a cellular module. 17.2% of smartwatches include a cellular module.
    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

    ?
    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
    Samsung Galaxy Watch 3 45mm 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
    Samsung Galaxy Watch 3 45mm 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
    Samsung Galaxy Watch 3 45mm 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

    1.40 inch
    Samsung Galaxy Watch 3 45mm has a screen size of 1.40 inch which is larger than the screens of 49.2% of smartwatches and equal to those of 6.8% 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

    AMOLED
    Samsung Galaxy Watch 3 45mm uses a AMOLED display type which is more advanced than that of 48.8% of smartwatches and the same as that of 51.3% of smartwatches.
    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

    360 x 360
    Samsung Galaxy Watch 3 45mm has a display resolution of 360 x 360 which is higher than that of 50.2% of smartwatches and equal to that of 6.7% 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

    364 ppi
    Samsung Galaxy Watch 3 45mm has a pixel density of 364 ppi which is higher than that of 63.6% of smartwatches and equal to that of 0.6% 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

    ?
    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

    2 x 1.15 GHz
    Samsung Galaxy Watch 3 45mm uses a CPU configuration of 2 x 1.15 GHz which is faster than that in 69.6% of smartwatches and equal to that in 2% of smartwatches.
    Derived from core-count and per-core clock notation
    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

    Exynos 9,110
    Samsung Galaxy Watch 3 45mm uses the Exynos 9110 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

    1 GB
    Samsung Galaxy Watch 3 45mm has 1 GB of RAM which is larger than the RAM in 32.3% of smartwatches and equal to that of 34.6% of smartwatches.
    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
    Samsung Galaxy Watch 3 45mm 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
    Samsung Galaxy Watch 3 45mm does not include an external memory slot. 0.3% of smartwatches include an external memory slot.
    Show more

    Samsung Galaxy Watch 3 45mm vs the average smartwatch

    • Has cellular module
      Samsung Galaxy Watch 345mm includes a cellular module, the average smartwatch does not. 17.2% of smartwatches include a 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

      Samsung Galaxy Watch 345mm includes a cellular module, the average smartwatch does not. 17.2% of smartwatches include a cellular module.
    • Has ECG
      Samsung Galaxy Watch 345mm supports ECG, the average smartwatch does not. 15.1% of smartwatches support ECG.
      Availability may vary by region or model version. May require a compatible phone, software version, or app setup.
      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

      Samsung Galaxy Watch 345mm supports ECG, the average smartwatch does not. 15.1% of smartwatches support ECG.
    • Includes fall detection
      Samsung Galaxy Watch 345mm supports fall detection, the average smartwatch does not. 22.4% of smartwatches support fall detection.
      manual activation required
      What it is: Automatic detection of hard falls that can trigger checks or emergency actions.
      When it matters: When you want extra help in an emergency.

      Importance: HIGH

      Samsung Galaxy Watch 345mm supports fall detection, the average smartwatch does not. 22.4% of smartwatches support fall detection.
    • Includes wireless charging
      Samsung Galaxy Watch 345mm 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

      Samsung Galaxy Watch 345mm supports wireless charging, the average smartwatch does not. 24.9% of smartwatches support wireless charging.
    • Has blood pressure monitoring
      Samsung Galaxy Watch 345mm supports blood pressure monitoring, the average smartwatch does not. 21.7% of smartwatches support blood pressure monitoring.
      Requires cuff calibration; availability may vary by region.
      What it is: Blood pressure measurement or estimation features available through the watch ecosystem.
      When it matters: When you want health data from your wrist during the day or night.

      Importance: HIGH

      Samsung Galaxy Watch 345mm supports blood pressure monitoring, the average smartwatch does not. 21.7% of smartwatches support blood pressure monitoring.
    • Has NFC
      Samsung Galaxy Watch 345mm 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

      Samsung Galaxy Watch 345mm supports NFC, the average smartwatch does not. 42.5% of smartwatches support NFC.
    • Stronger display glass
      Samsung Galaxy Watch 345mm uses Corning Gorilla Glass DX display glass, while the average smartwatch uses mineral glass.
      What it is: The glass material or protective cover used over the display.
      When it matters: When you want the screen to be easy to read at a glance.

      Importance: MEDIUM

      Good value: Sapphire or Gorilla Glass

      Samsung Galaxy Watch 345mm uses Corning Gorilla Glass DX display glass, while the average smartwatch uses mineral glass.Corning Gorilla Glass DX vs mineral glass
    • Supports Emergency SOS
      Samsung Galaxy Watch 345mm 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

      Samsung Galaxy Watch 345mm includes Emergency SOS, the average smartwatch does not. 42.4% of smartwatches include Emergency SOS.
    • Has ECG
      Samsung Galaxy Watch 345mm supports ECG, the average smartwatch does not. 15.1% of smartwatches support ECG.
    • Has blood pressure monitoring
      Samsung Galaxy Watch 345mm supports blood pressure monitoring, the average smartwatch does not. 21.7% of smartwatches support blood pressure monitoring.
    • Supports VO2 max
      Samsung Galaxy Watch 345mm measures VO2 max, the average smartwatch does not. 49.3% of smartwatches measure VO2 max.
    • Has irregular heart alerts
      Samsung Galaxy Watch 345mm supports irregular heart rate warnings, the average smartwatch does not. 43.7% of smartwatches support irregular heart rate warnings.
    • Supports calorie tracking
      Samsung Galaxy Watch 345mm supports calorie tracking, the average smartwatch does not. 43.8% of smartwatches support calorie tracking.
    • Has weight tracking
      Samsung Galaxy Watch 345mm supports weight tracking, the average smartwatch does not. 39.2% of smartwatches support weight tracking.
    • Supports water intake tracking
      Samsung Galaxy Watch 345mm tracks water intake, the average smartwatch does not. 48.2% of smartwatches track water intake.
    • Has multi-sport mode
      Samsung Galaxy Watch 345mm includes a multi-sport mode, the average smartwatch does not. 49.4% of smartwatches include a multi-sport mode.
    • Has barometer
      Samsung Galaxy Watch 345mm includes a barometer, the average smartwatch does not. 45.6% of smartwatches include a barometer.
    • Includes wireless charging
      Samsung Galaxy Watch 345mm supports wireless charging, the average smartwatch does not. 24.9% of smartwatches support wireless charging.
    • 9 h longer training battery life
      Samsung Galaxy Watch 345mm lasts longer in training mode than the average smartwatch (29 h vs 20 h). The average smartwatch lasts 20 h.
    • Has cellular module
      Samsung Galaxy Watch 345mm includes a cellular module, the average smartwatch does not. 17.2% of smartwatches include a cellular module.
    • Has NFC
      Samsung Galaxy Watch 345mm supports NFC, the average smartwatch does not. 42.5% of smartwatches support NFC.
    • Has compass
      Samsung Galaxy Watch 345mm includes a compass, the average smartwatch does not. 49.3% of smartwatches include a compass.
    • Supports Wi-Fi
      Samsung Galaxy Watch 345mm supports Wi-Fi, the average smartwatch does not. 43.4% of smartwatches support Wi-Fi.
    • Supports Galileo
      Samsung Galaxy Watch 345mm supports Galileo navigation, the average smartwatch does not. 38.7% of smartwatches support Galileo navigation.
    • Stronger display glass
      Samsung Galaxy Watch 345mm uses Corning Gorilla Glass DX display glass, while the average smartwatch uses mineral glass.
    • Has rugged design
      Samsung Galaxy Watch 345mm has a rugged design, the average smartwatch does not. 34.5% of smartwatches have a rugged design.
    • Better band material
      Samsung Galaxy Watch 345mm uses leather for the band material, while the average smartwatch uses silicone.
    • 38 ppi higher pixel density
      Samsung Galaxy Watch 345mm has a higher pixel density than the average smartwatch (364 ppi vs 326 ppi). The average smartwatch display reaches 326 ppi.
    • Better case material
      Samsung Galaxy Watch 345mm uses stainless steel for the case material, while the average smartwatch uses polycarbonate.
    • Includes fall detection
      Samsung Galaxy Watch 345mm supports fall detection, the average smartwatch does not. 22.4% of smartwatches support fall detection.
    • Supports Emergency SOS
      Samsung Galaxy Watch 345mm includes Emergency SOS, the average smartwatch does not. 42.4% of smartwatches include Emergency SOS.
    • Supports third-party apps
      Samsung Galaxy Watch 345mm supports third-party apps, the average smartwatch does not. 47.6% of smartwatches support third-party apps.
    • More advanced operating system
      Samsung Galaxy Watch 345mm runs a more advanced operating system than the average smartwatch (Tizen vs Proprietary OS).
    • Faster CPU speed
      Samsung Galaxy Watch 345mm uses a CPU configuration of 2x 1.15 GHz, while the average smartwatch uses 1 GHz.
    • 4 GB more storage
      Samsung Galaxy Watch 345mm 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 routes
      Samsung Galaxy Watch 345mm does not support route support, the average smartwatch does. 50.4% of smartwatches support route support.
    • 39 fewer exercise profiles
      Samsung Galaxy Watch 345mm supports fewer exercise modes than the average smartwatch (41 vs 80). The average smartwatch supports 80 exercise modes.
    • 5 day/s shorter battery life
      Samsung Galaxy Watch 345mm offers 2 day/s of battery life, while the average smartwatch offers 7 day/s.
      1.5 with heavy use/aod.
    • 7.5 h shorter GPS battery life
      Samsung Galaxy Watch 345mm lasts less with GPS on than the average smartwatch (12.5 h vs 20 h). The average smartwatch lasts 20 h.
    • 8.8 g heavier weight
      Samsung Galaxy Watch 345mm is heavier than the average smartwatch (53.8 g vs 45 g). The average smartwatch weighs 45 g.
    • No smart alarm
      Samsung Galaxy Watch 345mm 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.
    • Less advanced processor model
      Samsung Galaxy Watch 345mm uses the Exynos 9,110 processor model, while the average smartwatch uses Snapdragon 400.
    • 5 day/s shorter battery life
      Samsung Galaxy Watch 345mm offers 2 day/s of battery life, while the average smartwatch offers 7 day/s.
      1.5 with heavy use/aod.
      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

      Samsung Galaxy Watch 345mm offers 2 day/s of battery life, while the average smartwatch offers 7 day/s.2 day/s vs 7 day/s
    • No smart alarm
      Samsung Galaxy Watch 345mm 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.
      What it is: A smart alarm tries to wake you during a lighter sleep phase within a chosen time window instead of at one fixed minute.
      When it matters: It matters if you wear your smartwatch overnight and want a gentler wake-up based on your sleep pattern rather than a standard fixed alarm.

      Importance: LOW

      Samsung Galaxy Watch 345mm does not support a smart alarm, the average smartwatch does. 52.7% of smartwatches support this feature.
    • No routes
      Samsung Galaxy Watch 345mm does not support route support, the average smartwatch does. 50.4% of smartwatches support route support.
      What it is: Support for following saved routes, courses, or turn guidance during activities.
      When it matters: When you run, ride, hike, or navigate without relying on your phone.

      Importance: LOW

      Samsung Galaxy Watch 345mm does not support route support, the average smartwatch does. 50.4% of smartwatches support route support.
    • 7.5 h shorter GPS battery life
      Samsung Galaxy Watch 345mm lasts less with GPS on than the average smartwatch (12.5 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

      Samsung Galaxy Watch 345mm lasts less with GPS on than the average smartwatch (12.5 h vs 20 h). The average smartwatch lasts 20 h.12.5 h vs 20 h
    • 3.08x more expensive
      Samsung Galaxy Watch 345mm is more expensive than the average smartwatch (£400 vs £130).
      Samsung Galaxy Watch 345mm is more expensive than the average smartwatch (£400 vs £130).£400 vs £130
    • 8.8 g heavier weight
      Samsung Galaxy Watch 345mm is heavier than the average smartwatch (53.8 g vs 45 g). The average smartwatch weighs 45 g.
      What it is: The total mass of the watch body, usually expressed in grams.
      When it matters: When you wear the watch all day or sleep with it on.

      Importance: HIGH

      Good value: <=37 g

      Samsung Galaxy Watch 345mm is heavier than the average smartwatch (53.8 g vs 45 g). The average smartwatch weighs 45 g.53.8 g vs 45 g
    • 39 fewer exercise profiles
      Samsung Galaxy Watch 345mm supports fewer exercise modes than the average smartwatch (41 vs 80). The average smartwatch supports 80 exercise modes.
      What it is: The number of workout types or exercise profiles the watch can recognize or track.
      When it matters: When you track workouts and want better training data.

      Importance: LOW

      Good value: >=100

      Samsung Galaxy Watch 345mm supports fewer exercise modes than the average smartwatch (41 vs 80). The average smartwatch supports 80 exercise modes.41 vs 80
    • Less advanced processor model
      Samsung Galaxy Watch 345mm uses the Exynos 9,110 processor model, while the average smartwatch uses Snapdragon 400.
      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

      Samsung Galaxy Watch 345mm uses the Exynos 9,110 processor model, while the average smartwatch uses Snapdragon 400.Exynos 9,110 vs Snapdragon 400
    Total
    Overall
    Fitness
    Battery
    Display & Design
    Smart features
    Hardware

    Graphic comparison of Samsung Galaxy Watch 3 45mm and other Smartwatches

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    Third-party reviews

    amazon
    4.5
    1778 Reviews
    amazon
    4.3
    344 Reviews
    amazon
    4.2
    59 Reviews

    (Reviews last updated: Apr 2026)

    What customers like about Samsung Galaxy Watch 3 45mm?

    • Classic and premium traditional watch design with a high-quality leather strap
    • Physical rotating bezel provides a satisfying and intuitive way to navigate the interface
    • Vibrant and sharp Super AMOLED display that is easy to read in bright sunlight
    • Comprehensive health tracking features, including ECG, blood oxygen (SpO2), and fall detection
    • Seamless integration with Samsung Galaxy smartphones for calls, texts, and notifications
    • Automatic workout detection for activities like walking and running works reliably

    What customers dislike about Samsung Galaxy Watch 3 45mm?

    • Significant decrease in battery life compared to the original Galaxy Watch, often requiring daily charging
    • Limited selection of high-quality third-party apps in the Tizen OS store compared to Apple Watch or Wear OS
    • Slow charging speeds, taking over two hours to reach a full charge
    • Highly restricted functionality when paired with an iPhone, such as the inability to reply to messages
    • Bixby voice assistant is often described as slow or less capable than competitors
    • LTE models can experience overheating issues during extended standalone phone calls

    Expert reviews

    A
    au.pcmag.com
    11/08/2020
    Samsung Galaxy Watch3 - Review 2020 - PCMag Australia

    The Samsung Galaxy Watch3 is highlighted by PCMag as a top-tier, stylish smartwatch for Android users, featuring a premium design with a classic physical rotating bezel. It boasts a sharp Super AMOLED display, excellent text messaging, and robust fitness tracking, including new, advanced health tools like ECG and trip detection. However, the device is held back by short battery life...Read more

    T
    tomsguide.com
    12/10/2022
    Samsung Galaxy Watch 3 review | Tom's Guide

    The Samsung Galaxy Watch 3 is praised by Tom's Guide as a top-tier lifestyle smartwatch for Android, featuring a refined, lighter design and the return of the tactile physical rotating bezel. Key features include a vibrant display, comprehensive health monitoring (ECG, SpO2, fall detection), and robust fitness tracking, though the leather strap is unsuitable for intense, sweaty...Read more

    P
    pickr.com.au
    24/09/2020
    Review: Samsung Galaxy Watch3 (Galaxy Watch 3, SM-R850N)

    According to Pickr, the Samsung Galaxy Watch3 (SM-R850N) is a refined, premium wearable featuring a 1.2-inch Super AMOLED screen, stainless steel design, and a highly efficient, tactile physical rotating bezel for navigating Tizen OS. It provides smooth performance via the Exynos 9110 chip and includes comprehensive fitness tracking with auto-workout detection, GPS, and heart rate...Read more

    A
    androidcentral.com
    27/01/2022
    Samsung Galaxy Watch 3 review: Premium Samsung on your wrist

    The Android Central review highlights the Samsung Galaxy Watch 3 as a refined, premium wearable featuring a slimmer, lighter stainless steel design with a superior AMOLED display. A key pro is the returning physical rotating bezel, which offers a tactile, intuitive, and "zippy" navigation experience for the Tizen OS. Android CentralFunctionally, the watch boasts advanced health...Read more

    S
    sammobile.com
    09/09/2020
    Galaxy Watch 3 review: Samsung's classiest smartwatch rewards passion

    SamMobile hails the Galaxy Watch 3 as a stylish return to form, featuring a slimmer, lighter design with a functional physical rotating bezel and a bright 1.4-inch Super AMOLED display. Key benefits include enhanced health features like SpO2 monitoring and fall detection, alongside improved messaging capabilities, though initial limitations on ECG/blood pressure features were noted....Read more

    E
    expertreviews.co.uk
    29/11/2022
    Samsung Galaxy Watch 3 review: The best smartwatch for Android users

    The Samsung Galaxy Watch 3 is a refined, stylish wearable featuring a 14% thinner design, a highly functional rotating bezel, and a vibrant, bright Super AMOLED display. While it introduces valuable health tracking—including fall detection, VO2 max, and advanced running metrics—it suffers from a high launch price and stagnant internal hardware compared to its predecessors. Key...Read more

    F
    fitandwell.com
    27/06/2022
    Samsung Galaxy Watch 3 review: a great all-rounder fitness watch

    The Samsung Galaxy Watch 3 is a premium, stylish "all-rounder" that effectively blends everyday lifestyle features with robust, accurate fitness tracking, highlighted by its tactile rotating bezel and bright Super AMOLED screen. Key pros include seamless Spotify integration for phone-free workouts and a high-quality build, though it falls short for serious athletes due to a lack of...Read more

    T
    t3.com
    16/04/2021
    Samsung Galaxy Watch 3 review: one of the best smartwatch experiences out there - T3

    The Samsung Galaxy Watch 3 is lauded by T3 for its refined, slimmer design and the return of the highly functional physical rotating bezel. The device features a crisp, bright Super AMOLED display, though it is prone to smudges. It serves as a comprehensive health tracker, offering features like blood oxygen monitoring and accurate, automatic workout detection. T3While providing a...Read more

    T
    theguardian.com
    01/09/2020
    Samsung Galaxy Watch 3 review: the new king of Android smartwatches

    The Samsung Galaxy Watch 3 is praised for its refined design, featuring a 14% thinner build, a high-quality leather strap, and the return of the intuitive physical rotating bezel. It excels with a bright 1.4-inch AMOLED display and a snappy Tizen OS, offering a comprehensive fitness suite with automatic workout detection and advanced health metrics like VO2 Max. The GuardianHowever,...Read more

    T
    techradar.com
    05/08/2022
    Samsung Galaxy Watch 3 review - TechRadar

    The Samsung Galaxy Watch 3 is a premium, lightweight wearable featuring a classic design and a highly functional, returning physical rotating bezel for intuitive navigation. It excels in health monitoring with over 40 workout modes, fall detection, and advanced sensors for ECG and blood oxygen, although these features faced, regional availability constraints at launch. While...Read more

    C
    coachweb.com
    09/04/2021
    Samsung Galaxy Watch 3 Review: Great Smartwatch

    The Samsung Galaxy Watch 3 is highlighted as a stylish, premium smartwatch featuring a vibrant AMOLED screen and an intuitive rotating bezel, offering advanced health tracking like ECG and blood pressure monitoring. While praised for its design and smart features, the review notes significant drawbacks, including fallible GPS accuracy, a less user-friendly Samsung Health app, and...Read more

    I
    imtest.de
    12/02/2021
    Galaxy Watch 3: Here is how well it performs in our review

    The IMTEST review of the Samsung Galaxy Watch 3 highlights a premium, lightweight design featuring a functional physical rotating bezel for intuitive Tizen OS navigation. It offers advanced health monitoring, including ECG, blood oxygen (SpO2) tracking, and detailed running analysis. While praised for its aesthetic, the device suffers from disappointing battery life (1.5 to 2 days)...Read more

    (Translated)Show original
    F
    futurezone.at
    30/09/2020
    Samsung Galaxy Watch 3 review: The best smartwatch for Android

    The Futurezone review identifies the Samsung Galaxy Watch 3 as a top-tier Android wearable, praising its refined design, premium stainless steel/titanium build, and the intuitive physical rotating bezel. While offering comprehensive fitness tracking and advanced running metrics, a significant limitation at launch was that key health features like ECG and blood pressure monitoring...Read more

    (Translated)Show original
    N
    notebookcheck.com
    06/10/2020
    Samsung Galaxy Watch 3 Review – The Smartwatch with a High Fun Factor

    The Samsung Galaxy Watch 3 features a premium, thinner design with a rotating bezel, a vibrant Super AMOLED display, and improved health-tracking, including ECG and blood pressure monitoring, though battery life is significantly shorter than its predecessor. Pros include accurate fitness tracking with advanced running metrics and the Tizen OS, while the high price and limited app...Read more

    (Translated)Show original
    C
    computerbild.de
    19/11/2020
    Galaxy Watch 3: Review and Comparison with the 4 Classic

    The Computer Bild review highlights the Samsung Galaxy Watch 3 as a premium, lightweight wearable featuring a "genius" physical rotating bezel for intuitive navigation. It features a sharp, vibrant OLED display and a refined design that is comfortable for 24/7 wear. Key health and fitness features include robust automatic workout detection, a detailed running coach, and sensors for...Read more

    (Translated)Show original
    C
    chip.de
    01/09/2020
    Samsung Galaxy Watch 3 45mm Review

    According to the CHIP review, the Samsung Galaxy Watch3 is a high-end, stylish smartwatch featuring a slimmer design, high-quality build, and an intuitive, tactile physical rotating bezel. The bright, clear 360x360 Super AMOLED display and robust health tracking features—including fall detection, SpO2, and advanced running analysis—are major pros. However, the review notes that key...Read more

    (Translated)Show original
    H
    heise.de
    23/11/2020
    Samsung Galaxy Watch 3 Review: A Real Apple Competitor?

    The Samsung Galaxy Watch 3 is a premium, lightweight smartwatch featuring a 5 ATM water-resistant design and a brilliant AMOLED screen, distinguished by its highly intuitive physical rotating bezel for navigation. Running on Tizen OS, it excels in comprehensive health monitoring—including SpO2, ECG, and fall detection—paired with a slick user interface, though its third-party app...Read more

    (Translated)Show original
    N
    nerd-o-mania.de
    20/08/2020
    SAMSUNG Galaxy Watch3 Review

    Nerd-o-Mania’s review of the Samsung Galaxy Watch 3 highlights its exceptional build quality, refined design, and the return of the mechanical rotating bezel, which pairs well with the bright Super AMOLED display. The watch is praised for being thinner and lighter than its predecessor, offering a premium feel with a high-quality leather strap. Key pros include a fast, intuitive...Read more

    (Translated)Show original
    F
    frandroid.com
    25/10/2020
    Samsung Galaxy Watch 3 Review: Our Full Verdict

    Frandroid reviews the Samsung Galaxy Watch 3 as a refined successor, praising the return of the physical rotating bezel and a lighter, 14% thinner stainless steel design. The device features a vibrant Super AMOLED display and robust health-tracking, including advanced running metrics and fall detection. While Tizen 5.5 offers a smooth user experience, the watch suffers from limited...Read more

    (Translated)Show original
    M
    mrmontre.com
    04/05/2021
    Samsung Galaxy Watch 3: Review & Impressions

    The MrMontre review characterizes the Samsung Galaxy Watch 3 as a stylish, premium device featuring a refined design that is 14% thinner and 15% lighter than its predecessor, complete with a tactile rotating bezel for smooth Tizen OS navigation [MrMontre review]. Its robust health suite includes SpO2 monitoring, fall detection, and an exceptional Super AMOLED display, though high...Read more

    (Translated)Show original
    M
    montre-cardio-gps.fr
    01/06/2021
    Samsung Galaxy Watch 3 Review: Sportier Than Ever

    The Samsung Galaxy Watch 3 combines a refined, thinner design with a rotating bezel and advanced health features like ECG and blood pressure monitoring, aiming to bridge the gap between lifestyle and fitness. While providing improved GPS and heart rate tracking along with advanced running metrics, the device often falls short in precision for intense training and restricts some...Read more

    (Translated)Show original
    C
    clubic.com
    07/06/2021
    Galaxy Watch3 Review: The best utilitarian smartwatch right now?

    The Samsung Galaxy Watch3 is a premium, lightweight smartwatch featuring a refined design, a vibrant Super AMOLED display, and a functional physical rotating bezel for intuitive navigation. It excels in utility with a responsive Tizen OS, comprehensive health tracking, and robust LTE call/message features. However, the device suffers from limited third-party apps, high pricing, and...Read more

    (Translated)Show original
    L
    lesnumeriques.com
    09/10/2020
    Samsung Galaxy Watch 3 Bluetooth 45 mm Review

    The Samsung Galaxy Watch 3 (45mm) offers a premium, refined design featuring a high-quality stainless steel casing, a superior OLED display, and an intuitive physical rotating bezel for navigation. While lauded for its aesthetics, the device falls short in performance, with the heart rate sensor proving inconsistent during high-intensity interval training, often failing to track...Read more

    (Translated)Show original
    G
    global.techradar.com
    10/02/2021
    Samsung Galaxy Watch 3 Review

    The Samsung Galaxy Watch 3 is a premium, feature-packed wearable with a refined design, utilizing a, lighter titanium or stainless steel body and a, highly functional, physical rotating bezel. While it features a vibrant, durable, Super AMOLED display, its, key drawbacks include a high, price point and, limited, third-party app selection, notes,. Performance is, robust, with the,...Read more

    (Translated)Show original
    G
    global.techradar.com
    18/08/2021
    Samsung Galaxy Watch 3 Review - TechRadar

    The Samsung Galaxy Watch 3 is a premium, lightweight smartwatch featuring a 1.2-inch or 1.4-inch AMOLED display and a tactile physical rotating bezel for navigation. Pros include a slim, comfortable design, comprehensive health tracking with ECG and SpO2 monitoring, and advanced running metrics. However, cons include limited third-party app support, a high price point, and limited...Read more

    (Translated)Show original
    T
    tuttotech.net
    17/10/2020
    Samsung Galaxy Watch 3 Review: It truly has few rivals

    The TudoTech review highlights the Samsung Galaxy Watch 3 as a refined, traditional-looking wearable that is thinner and lighter than its predecessor, featuring a vibrant AMOLED display and a highly practical physical rotating bezel. Key advantages include its superior design, robust build quality, and intuitive navigation. On the health front, the watch excels with advanced...Read more

    (Translated)Show original
    S
    smartworld.it
    03/10/2020
    Samsung Galaxy Watch 3 Review: Elegant and Expensive

    The Samsung Galaxy Watch 3 is praised as a refined, lighter, and thinner smartwatch featuring a highly intuitive rotating bezel and a vibrant Super AMOLED display. Key pros include a comprehensive health suite with advanced running metrics, blood oxygen (SpO2) monitoring, and reliable automatic workout detection, though initial, regional regulatory delays for ECG and blood pressure...Read more

    (Translated)Show original
    A
    andreagaleazzi.com
    24/08/2020
    Samsung Galaxy Watch 3 Review - Andrea Galeazzi

    Andrea Galeazzi reviews the Samsung Galaxy Watch 3, emphasizing its premium build, high-quality display, and the return of the physical rotating bezel. Key features include advanced health sensors like SpO2 and fall detection, alongside a responsive interface and solid durability (IP68/MIL-STD-810G). While the watch offers strong GPS performance and useful smart features like...Read more

    (Translated)Show original
    T
    techgirl.nl
    13/10/2020
    Review Samsung Galaxy Watch 3: The 'Almost' Sports Watch

    The TechGirl review positions the Samsung Galaxy Watch 3 as a stylish lifestyle accessory rather than a dedicated sports watch, noting it is a "just-not-quite" fitness device. Pros highlighted include a lighter, premium design with a functional rotating bezel and a sharp, bright Super AMOLED display. However, the review notes a lack of a sweat-resistant strap out of the box and...Read more

    (Translated)Show original
    W
    want.nl
    24/10/2020
    Samsung Galaxy Watch 3 Review

    The Samsung Galaxy Watch 3 is highlighted as a refined, traditional-looking smartwatch featuring a highly praised physical rotating bezel for intuitive navigation. The device offers a lighter, thinner stainless steel design and a bright, sharp Super AMOLED display. Key health features include advanced running analysis, fall detection, and an ECG app, with Tizen OS providing a smooth...Read more

    (Translated)Show original
    T
    tweakers.net
    26/08/2020
    Thorough and independent Samsung Galaxy Watch3 (45mm) reviews

    According to user reviews on Tweakers, the Samsung Galaxy Watch 3 45mm is praised for its premium, traditional watch design and the highly intuitive rotating physical bezel, which provides excellent navigation. The 1.4-inch Super AMOLED screen is lauded for its brightness and clarity, although some users find the 45mm size to be slightly bulky, and the leather strap may feel...Read more

    (Translated)Show original
    C
    coolesuggesties.nl
    30/03/2021
    Samsung Galaxy Watch 3 review

    The Coole Suggesties review highlights the Samsung Galaxy Watch 3 as a premium wearable blending a traditional, mechanical aesthetic with high-tech features, specifically praising the physical rotating bezel for intuitive navigation. It is noted for being thinner and lighter than its predecessor, offering a comfortable, durable design and a bright Super AMOLED screen. While...Read more

    (Translated)Show original
    G
    gadgetgear.nl
    16/11/2020
    Samsung Galaxy Watch 3 Review

    In a November 2020 review, GadgetGear.nl praised the Samsung Galaxy Watch 3 as a top-tier premium wearable featuring a classic circular design, robust build quality, and a highly functional physical rotating bezel for navigation. The 1.4-inch AMOLED display was highlighted for its vibrancy, complementing the watch's stylish, comfortable design. Performance-wise, the device was...Read more

    (Translated)Show original
    G
    gadgetkeuze.nl
    17/10/2020
    Samsung Galaxy Watch 3 Review: Comparing Battery Life and Health Features in Dutch Reviews

    The Samsung Galaxy Watch 3 is praised by Gadget Keuze for blending a premium, stylish design with advanced health-tracking functionality, featuring a durable stainless steel frame and a comfortable leather strap. Key features highlighted include a bright AMOLED screen, intuitive navigation via the physical rotating bezel, and specialized sensors for ECG and blood oxygen monitoring....Read more

    (Translated)Show original
    G
    global.techradar.com
    06/10/2020
    Samsung Galaxy Watch 3 review

    The Samsung Galaxy Watch 3 is a refined, premium smartwatch featuring a tactile physical rotating bezel, a vivid AMOLED display, and a design that is both slimmer and lighter than its predecessor. Key pros include comprehensive health tracking, such as advanced sleep metrics and fall detection, alongside automatic activity tracking. However, notable cons include a short two-day...Read more

    (Translated)Show original
    A
    androidworld.nl
    14/09/2020
    Samsung Galaxy Watch 3 review: these are the pros and cons

    The Samsung Galaxy Watch 3 is a premium, stylish smartwatch featuring a classic design with a highly functional physical rotating bezel and a vibrant AMOLED display. It boasts 1GB of RAM for a smooth Tizen OS experience, accurate heart rate tracking, fast GPS, and advanced, detailed running metrics. However, major drawbacks include poor battery life, a high price point, limited app...Read more

    (Translated)Show original

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