Asus Zenwatch 3 WI503q Review | 126 Data compared

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  • Avg. price in UK: ~£200
  • Avg. price in US: ~$230
  • Screen size: 1.39 inch
  • Battery life: 1 day/s
  • Display type: AMOLED

Asus Zenwatch 3 WI503q review. Compare 126 technical specifications and user reviews to see how it ranks among smartwatches and if it is worth buying.

6.2

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%

5.9

Technical Score

10.0%

8.4

User score

Good
5.9

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%

3.8

Health

21.0%

7.4

Fitness

16.0%

5.9

Battery

14.0%

8.5

Smart features

12.0%

3.7

Connectivity

9.0%

7.4

Display & Design

4.0%

5.3

Hardware

Good
8.4

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%

7.7

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
3.9
(471)
amazon
3.8
(81)
amazon
3.7
(80)
amazon
3.8
(63)
United States
Amazon_logo.png
3.9
(495)

(Reviews last updated: April 2026)

Excellent
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    Best prices in UK

    Best rankings

    ?

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

    Verdict

    The Asus Zenwatch 3 WI503q is a circular Android Wear smartwatch featuring a 1.39-inch AMOLED display with a 400x400 resolution (287 ppi) and Gorilla Glass 3, housed in a 316L stainless steel frame. Powered by a Qualcomm Snapdragon Wear 2100 processor with 512MB of RAM and 4GB of storage, it includes three physical side buttons, a 340mAh battery with HyperCharge fast-charging (60% in 15 minutes), and IP67 water resistance. Main pros include its elegant, jewelry-grade design, vibrant display, and highly responsive customisable buttons for app launching. However, significant cons include the absence of a heart rate monitor and GPS, proprietary lug design that limits strap options, and sluggish performance or decreased battery life when updated to newer software versions.

    Technical Specifications of smartwatch Asus Zenwatch 3 WI503q

    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%

    3.8

    Health

    21.0%

    7.4

    Fitness

    16.0%

    5.9

    Battery

    14.0%

    8.5

    Smart features

    12.0%

    3.7

    Connectivity

    9.0%

    7.4

    Display & Design

    4.0%

    5.3

    Hardware

    5.9
    Asus Zenwatch 3 WI503q has a technical score of 5.91 points, which is lower than 58.3% 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%

    7.7

    User reviews

    30.0%

    10

    Popularity

    User score:
    United Kingdom
    amazon
    3.9
    (471)
    amazon
    3.8
    (81)
    amazon
    3.7
    (80)
    amazon
    3.8
    (63)
    United States
    Amazon_logo.png
    3.9
    (495)

    (Reviews last updated: April 2026)

    8.4
    Asus Zenwatch 3 WI503q has a user score of 8.4 points, which is higher than 54.3% 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
    Asus Zenwatch 3 WI503q has a popularity of 10 points, which is higher than 52.6% of products in this category.
    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%

    6.2

    Overall score

    40.0%

    9.5

    Price

    7.2
    Asus Zenwatch 3 WI503q has a quality-to-price ratio of 7.2 points, which is lower than 52.5% of products in this category.
    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

    Asus
    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
    Asus Zenwatch 3 WI503q 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
    Asus Zenwatch 3 WI503q does not support blood oxygen monitoring. 64.4% of smartwatches support blood oxygen monitoring.
    Readings are for wellness use, not medical diagnosis.
    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
    Asus Zenwatch 3 WI503q does not support ECG. 15.1% of smartwatches support ECG.
    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

    no
    Asus Zenwatch 3 WI503q does not support 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
    Asus Zenwatch 3 WI503q 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

    no
    Asus Zenwatch 3 WI503q does not include 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
    Asus Zenwatch 3 WI503q 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
    Asus Zenwatch 3 WI503q 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
    Asus Zenwatch 3 WI503q 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

    1 day/s
    Asus Zenwatch 3 WI503q offers a battery life of 1 day/s which is shorter than that of 87.3% of smartwatches and equal to that of 8.6% of smartwatches.
    1 (with always-on.
    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

    ?
    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

    N/A
    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

    341 mAh
    Asus Zenwatch 3 WI503q has a battery capacity of 341 mAh which is larger than the batteries in 63.5% of smartwatches of smartwatches.
    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

    55 min
    Asus Zenwatch 3 WI503q charges in 55 min which is faster than 93.7% of smartwatches of smartwatches.
    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

    Wear OS
    Asus Zenwatch 3 WI503q runs Wear OS which is more advanced than the operating system in 78.9% of smartwatches and the same as that in 16.7% of smartwatches.
    OS detail: Wear OS (2.0).
    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
    Asus Zenwatch 3 WI503q has ended software update support which is less active than that of 42.6% of smartwatches and equal to that of 57.5% of smartwatches.
    Updates appear infrequent or sporadic.
    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
    Asus Zenwatch 3 WI503q 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
    Asus Zenwatch 3 WI503q 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
    Asus Zenwatch 3 WI503q 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

    no
    Asus Zenwatch 3 WI503q does not include 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

    0
    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

    no
    Asus Zenwatch 3 WI503q does not support 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

    no
    Asus Zenwatch 3 WI503q does not support Galileo navigation. 38.7% of smartwatches support Galileo navigation.
    No built-in GPS; uses connected phone GPS.
    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
    Asus Zenwatch 3 WI503q 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

    1.39 inch
    Asus Zenwatch 3 WI503q has a screen size of 1.39 inch which is smaller than the screens of 51% of smartwatches and equal to those of 9.6% of smartwatches.
    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
    Asus Zenwatch 3 WI503q 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

    400 x 400
    Asus Zenwatch 3 WI503q has a display resolution of 400x400 which is higher than that of 69.4% of smartwatches and equal to that of 2.8% 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

    407 ppi
    Asus Zenwatch 3 WI503q has a pixel density of 407 ppi which is higher than that of 70.2% of smartwatches and equal to that of 1.8% 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

    1.1 GHz
    Asus Zenwatch 3 WI503q uses a CPU configuration of 1.1 GHz which is faster than that in 60.8% of smartwatches of smartwatches.
    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

    Snapdragon Wear 2100
    Asus Zenwatch 3 WI503q uses the Snapdragon Wear 2100 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

    0.5 GB
    Asus Zenwatch 3 WI503q has 0.5 GB of RAM which is smaller than the RAM in 72.6% of smartwatches and equal to that of 19.2% 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

    4 GB
    Asus Zenwatch 3 WI503q uses 4 GB for internal storage which is larger than that of 40.5% of smartwatches and equal to that of 26.9% 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
    Asus Zenwatch 3 WI503q does not include an external memory slot. 0.3% of smartwatches include an external memory slot.
    Show more

    Asus Zenwatch 3 WI503q vs the average smartwatch

    • 65 min shorter charge time
      Asus Zenwatch 3 WI503q charges faster than the average smartwatch (55 min vs 120 min). The average smartwatch charges in 120 min.
      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

      Asus Zenwatch 3 WI503q charges faster than the average smartwatch (55 min vs 120 min). The average smartwatch charges in 120 min.55 min vs 120 min
    • More advanced operating system
      Asus Zenwatch 3 WI503q runs a more advanced operating system than the average smartwatch (Wear OS vs Proprietary OS).
      OS detail: Wear OS (2).
      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

      Asus Zenwatch 3 WI503q runs a more advanced operating system than the average smartwatch (Wear OS vs Proprietary OS).Wear OS vs Proprietary OS
    • Supports Emergency SOS
      Asus Zenwatch 3 WI503q includes Emergency SOS, the average smartwatch does not. 42.4% of smartwatches include Emergency SOS.
      SOS feature has implementation limits (phone/app/subscription/activity dependent).
      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

      Asus Zenwatch 3 WI503q includes Emergency SOS, the average smartwatch does not. 42.4% of smartwatches include Emergency SOS.
    • Supports third-party apps
      Asus Zenwatch 3 WI503q supports third-party apps, the average smartwatch does not. 47.6% of smartwatches support third-party apps.
      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

      Asus Zenwatch 3 WI503q supports third-party apps, the average smartwatch does not. 47.6% of smartwatches support third-party apps.
    • Stronger display glass
      Asus Zenwatch 3 WI503q uses Corning Gorilla Glass 3 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

      Asus Zenwatch 3 WI503q uses Corning Gorilla Glass 3 display glass, while the average smartwatch uses mineral glass.Corning Gorilla Glass 3 vs mineral glass
    • Has compass
      Asus Zenwatch 3 WI503q includes a compass, the average smartwatch does not. 49.3% of smartwatches include a 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

      Asus Zenwatch 3 WI503q includes a compass, the average smartwatch does not. 49.3% of smartwatches include a compass.
    • Supports Wi-Fi
      Asus Zenwatch 3 WI503q supports Wi-Fi, the average smartwatch does not. 43.4% of smartwatches support Wi-Fi.
      What it is: Built-in Wi-Fi that lets the watch connect to wireless networks directly.
      When it matters: When you want the watch to work smoothly with your phone and accessories.

      Importance: MEDIUM

      Asus Zenwatch 3 WI503q supports Wi-Fi, the average smartwatch does not. 43.4% of smartwatches support Wi-Fi.
    • Has external HR monitor
      Asus Zenwatch 3 WI503q supports external heart rate monitor compatibility, the average smartwatch does not. 41.3% of smartwatches support external heart rate monitor compatibility.
      Supported through Wear OS or third-party apps.
      What it is: Compatibility with external chest straps or other heart-rate transmitters.
      When it matters: When you want the watch to work with fitness gear and other accessories.

      Importance: LOW

      Asus Zenwatch 3 WI503q supports external heart rate monitor compatibility, the average smartwatch does not. 41.3% of smartwatches support external heart rate monitor compatibility.
    • Has external HR monitor
      Asus Zenwatch 3 WI503q supports external heart rate monitor compatibility, the average smartwatch does not. 41.3% of smartwatches support external heart rate monitor compatibility.
    • 65 min shorter charge time
      Asus Zenwatch 3 WI503q charges faster than the average smartwatch (55 min vs 120 min). The average smartwatch charges in 120 min.
    • 41 mAh larger battery capacity
      Asus Zenwatch 3 WI503q has a larger battery capacity than the average smartwatch (341 mAh vs 300 mAh). The average smartwatch battery is 300 mAh.
    • Has compass
      Asus Zenwatch 3 WI503q includes a compass, the average smartwatch does not. 49.3% of smartwatches include a compass.
    • Supports Wi-Fi
      Asus Zenwatch 3 WI503q supports Wi-Fi, the average smartwatch does not. 43.4% of smartwatches support Wi-Fi.
    • Stronger display glass
      Asus Zenwatch 3 WI503q uses Corning Gorilla Glass 3 display glass, while the average smartwatch uses mineral glass.
    • 81 ppi higher pixel density
      Asus Zenwatch 3 WI503q has a higher pixel density than the average smartwatch (407 ppi vs 326 ppi). The average smartwatch display reaches 326 ppi.
    • Higher resolution
      Asus Zenwatch 3 WI503q has a display resolution of 400x400, while the average smartwatch reaches 352x430.
    • Better band material
      Asus Zenwatch 3 WI503q uses leather for the band material, while the average smartwatch uses silicone.
    • Better case material
      Asus Zenwatch 3 WI503q uses stainless steel for the case material, while the average smartwatch uses polycarbonate.
    • 0.8 mm thinner watch body
      Asus Zenwatch 3 WI503q is thinner than the average smartwatch (10.8 mm vs 11.6 mm). The average smartwatch thickness is 11.6 mm.
    • More advanced operating system
      Asus Zenwatch 3 WI503q runs a more advanced operating system than the average smartwatch (Wear OS vs Proprietary OS).
    • Supports Emergency SOS
      Asus Zenwatch 3 WI503q includes Emergency SOS, the average smartwatch does not. 42.4% of smartwatches include Emergency SOS.
    • Supports third-party apps
      Asus Zenwatch 3 WI503q supports third-party apps, the average smartwatch does not. 47.6% of smartwatches support third-party apps.
    • Faster CPU speed
      Asus Zenwatch 3 WI503q uses a CPU configuration of 1.1 GHz, while the average smartwatch uses 1 GHz.
    • No blood oxygen
      Asus Zenwatch 3 WI503q does not support blood oxygen monitoring, the average smartwatch does. 64.4% of smartwatches support blood oxygen monitoring.
      Readings are for wellness use, not medical diagnosis.
    • No stress monitoring
      Asus Zenwatch 3 WI503q does not support stress monitoring, the average smartwatch does. 65.4% of smartwatches support stress monitoring.
    • No elevation tracking
      Asus Zenwatch 3 WI503q does not support elevation tracking, the average smartwatch does. 62.7% of smartwatches support elevation tracking.
    • No coaching
      Asus Zenwatch 3 WI503q does not support coaching, the average smartwatch does. 51.8% of smartwatches support coaching.
    • No auto pause
      Asus Zenwatch 3 WI503q does not support auto pause, the average smartwatch does. 59.3% of smartwatches support auto pause.
    • No swim mode
      Asus Zenwatch 3 WI503q does not include a swim sport mode, the average smartwatch does. 74.9% of smartwatches include a swim sport mode.
      Swimming use is not recommended.
    • 76 fewer exercise profiles
      Asus Zenwatch 3 WI503q supports fewer exercise modes than the average smartwatch (4 vs 80). The average smartwatch supports 80 exercise modes.
    • 6 day/s shorter battery life
      Asus Zenwatch 3 WI503q offers 1 day/s of battery life, while the average smartwatch offers 7 day/s.
      1 (with always-on.
    • No GPS
      Asus Zenwatch 3 WI503q does not support GPS, the average smartwatch does. 56.1% of smartwatches support GPS.
    • Older Bluetooth version
      Asus Zenwatch 3 WI503q supports an older Bluetooth version than the average smartwatch (4.1 vs 5.0). The average smartwatch uses 5.0.
    • 49 m lower waterproof depth
      Asus Zenwatch 3 WI503q has a shallower waterproof rating than the average smartwatch (1 m vs 50 m). The average smartwatch reaches 50 m.
    • Lower IP rating
      Asus Zenwatch 3 WI503q has a lower IP rating than the average smartwatch (IP67 vs IP68).
    • 0.01 inch smaller screen size
      Asus Zenwatch 3 WI503q has a smaller screen size than the average smartwatch (1.4 inch vs 1.4 inch). The average smartwatch screen is 1.4 inch.
    • 0.5 GB less RAM
      Asus Zenwatch 3 WI503q has less RAM than the average smartwatch (0.5 GB vs 1 GB). The average smartwatch includes 1 GB of RAM.
    • 5 year/s older release date
      Asus Zenwatch 3 WI503q is an older model than the average smartwatch (2016 vs 2021). The average smartwatch was released in 2021.
      December 2016
    • No GPS
      Asus Zenwatch 3 WI503q does not support GPS, the average smartwatch does. 56.1% of smartwatches 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

      Asus Zenwatch 3 WI503q does not support GPS, the average smartwatch does. 56.1% of smartwatches support GPS.
    • No blood oxygen
      Asus Zenwatch 3 WI503q does not support blood oxygen monitoring, the average smartwatch does. 64.4% of smartwatches support blood oxygen monitoring.
      Readings are for wellness use, not medical diagnosis.
      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

      Asus Zenwatch 3 WI503q does not support blood oxygen monitoring, the average smartwatch does. 64.4% of smartwatches support blood oxygen monitoring.
    • 49 m lower waterproof depth
      Asus Zenwatch 3 WI503q has a shallower waterproof rating than the average smartwatch (1 m vs 50 m). The average smartwatch reaches 50 m.
      What it is: The stated depth or water-resistance class the watch is rated to withstand.
      When it matters: When you wear the watch in rain, sweat, or water.

      Importance: HIGH

      Good value: >=50 m

      Asus Zenwatch 3 WI503q has a shallower waterproof rating than the average smartwatch (1 m vs 50 m). The average smartwatch reaches 50 m.1 m vs 50 m
    • No stress monitoring
      Asus Zenwatch 3 WI503q does not support stress monitoring, the average smartwatch does. 65.4% of smartwatches support stress monitoring.
      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

      Asus Zenwatch 3 WI503q does not support stress monitoring, the average smartwatch does. 65.4% of smartwatches support stress monitoring.
    • No elevation tracking
      Asus Zenwatch 3 WI503q does not support elevation tracking, the average smartwatch does. 62.7% of smartwatches support elevation tracking.
      What it is: Tracking of climbed, descended, or current elevation during activities.
      When it matters: When you run, ride, hike, or navigate without relying on your phone.

      Importance: MEDIUM

      Asus Zenwatch 3 WI503q does not support elevation tracking, the average smartwatch does. 62.7% of smartwatches support elevation tracking.
    • Lower IP rating
      Asus Zenwatch 3 WI503q has a lower IP rating than the average smartwatch (IP67 vs IP68).
      What it is: A standardized ingress-protection code showing how well the watch resists dust and water.
      When it matters: When you wear the watch in rain, sweat, or water.

      Importance: HIGH

      Good value: IP68 or better

      Asus Zenwatch 3 WI503q has a lower IP rating than the average smartwatch (IP67 vs IP68).IP67 vs IP68
    • 6 day/s shorter battery life
      Asus Zenwatch 3 WI503q offers 1 day/s of battery life, while the average smartwatch offers 7 day/s.
      1 (with always-on.
      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

      Asus Zenwatch 3 WI503q offers 1 day/s of battery life, while the average smartwatch offers 7 day/s.1 day/s vs 7 day/s
    • No coaching
      Asus Zenwatch 3 WI503q does not support coaching, the average smartwatch does. 51.8% of smartwatches support coaching.
      What it is: Guided training or wellness suggestions based on your data and habits.
      When it matters: When you track workouts and want better training data.

      Importance: LOW

      Asus Zenwatch 3 WI503q does not support coaching, the average smartwatch does. 51.8% of smartwatches support coaching.

    Graphic comparison of Asus Zenwatch 3 WI503q and other Smartwatches

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    Third-party reviews

    United States

    (Reviews last updated: April 2026)

    What customers like about Asus Zenwatch 3 WI503q?

    • Elegant and premium traditional watch-inspired design
    • Vibrant 1.39-inch AMOLED display with no 'flat tire' effect
    • HyperCharge technology providing 60% charge in about 15 minutes
    • Slim 9.95mm profile making it comfortable for various wrist sizes
    • Three customisable physical buttons for quick app access
    • IP67 water resistance suitable for rain and splashes

    What customers dislike about Asus Zenwatch 3 WI503q?

    • Lack of built-in GPS and heart rate monitor
    • Proprietary lugs that make using standard 3rd-party bands difficult
    • Inconsistent battery life that often requires daily charging
    • Occasional sluggish performance or lag with Android Wear software
    • Lack of NFC, preventing the use of mobile payment services like Google Pay
    • Fixed-angle band design can feel rigid on very small or non-standard wrists

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