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Xiaomi Watch S4 Review | 126 Data compared

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  • Avg. price: ~£140
  • Screen size: 1.43 inch
  • Battery life: 15 day/s
  • Display type: AMOLED

Xiaomi Watch S4 review. Compare 126 technical specifications and user reviews to see how it ranks among smartwatches and if it is worth buying.

8.3

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%

8.1

Technical Score

10.0%

9.3

User score

Excellent
8.1

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%

7.6

Health

21.0%

9.7

Fitness

16.0%

7.0

Battery

14.0%

8.0

Smart features

12.0%

7.6

Connectivity

9.0%

8.8

Display & Design

4.0%

8.5

Hardware

Excellent
9.3

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%

9.0

User reviews

30.0%

10

Popularity

User score:
amazon
4.4
(488)
amazon
4.6
(368)
amazon
5.0
(1)

(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 Xiaomi Watch S4

    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%

    7.6

    Health

    21.0%

    9.7

    Fitness

    16.0%

    7.0

    Battery

    14.0%

    8.0

    Smart features

    12.0%

    7.6

    Connectivity

    9.0%

    8.8

    Display & Design

    4.0%

    8.5

    Hardware

    8.1
    Xiaomi Watch S4 has a technical score of 8.14 points, which is higher than 89.9% 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%

    9.0

    User reviews

    30.0%

    10

    Popularity

    User score:
    amazon
    4.4
    (488)
    amazon
    4.6
    (368)
    amazon
    5.0
    (1)

    (Reviews last updated: Apr 2026)

    9.3
    Xiaomi Watch S4 has a user score of 9.28 points, which is higher than 96% 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
    Xiaomi Watch S4 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%

    8.3

    Overall score

    40.0%

    9.8

    Price

    8.7
    Xiaomi Watch S4 has a quality-to-price ratio of 8.7 points, which is higher than 96% 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

    Xiaomi
    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
    Xiaomi Watch S4 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
    Xiaomi Watch S4 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

    no
    Xiaomi Watch S4 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

    yes
    Xiaomi Watch S4 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
    Xiaomi Watch S4 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
    Xiaomi Watch S4 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
    Xiaomi Watch S4 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
    Xiaomi Watch S4 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
    Xiaomi Watch S4 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

    15 day/s
    Xiaomi Watch S4 offers a battery life of 15 day/s which is longer than that of 86.3% of smartwatches and equal to that of 3.2% of smartwatches.
    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

    30 h
    Xiaomi Watch S4 lasts 30 h in training mode which is longer than 70.2% of smartwatches and equal to that of 5.5% 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

    20 h
    Xiaomi Watch S4 lasts 20 h with GPS on which is longer than 46.6% of smartwatches and equal to that of 5.6% 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

    486 mAh
    Xiaomi Watch S4 has a battery capacity of 486 mAh which is larger than the batteries in 91.2% of smartwatches and equal to those in 0.2% 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

    ?
    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

    HyperOS
    Xiaomi Watch S4 runs HyperOS which is more advanced than the operating system in 58.7% of smartwatches and the same as that in 1.3% 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

    occasional
    Xiaomi Watch S4 has occasional software update support which is more active than that of 57.6% of smartwatches and equal to that of 36.2% of smartwatches.
    Updates are typically released about every 3 months.
    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

    no
    Xiaomi Watch S4 does not support 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
    Xiaomi Watch S4 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
    Xiaomi Watch S4 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
    Xiaomi Watch S4 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

    ?
    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
    Xiaomi Watch S4 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
    Xiaomi Watch S4 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
    Xiaomi Watch S4 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

    1.43 inch
    Xiaomi Watch S4 has a screen size of 1.43 inch which is larger than the screens of 56.8% of smartwatches and equal to those of 8.1% 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
    Xiaomi Watch S4 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

    466 x 466
    Xiaomi Watch S4 has a display resolution of 466 x 466 which is higher than that of 87.4% of smartwatches and equal to that of 10.9% 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

    461 ppi
    Xiaomi Watch S4 has a pixel density of 461 ppi which is higher than that of 84.7% of smartwatches and equal to that of 6.4% 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

    2,200 nits
    Xiaomi Watch S4 reaches 2200 nits nits of display brightness, which is higher than that of 95% of smartwatches and equal to that of 0.9% 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

    0.5 GHz
    Xiaomi Watch S4 uses a CPU configuration of 0.5 GHz which is slower than that in 72.8% 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

    ?
    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

    ?
    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

    32 GB
    Xiaomi Watch S4 uses 32 GB for internal storage which is larger than that of 84.8% of smartwatches and equal to that of 13.4% 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
    Xiaomi Watch S4 does not include an external memory slot. 0.3% of smartwatches include an external memory slot.
    Show more

    Xiaomi Watch S4 vs the average smartwatch

    • 1,600 nits higher display brightness
      Xiaomi Watch S4 has higher display brightness than the average smartwatch (2,200 nits nits vs 600 nits nits). The average smartwatch reaches 600 nits nits.
      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

      Xiaomi Watch S4 has higher display brightness than the average smartwatch (2,200 nits nits vs 600 nits nits). The average smartwatch reaches 600 nits nits.2,200 nits vs 600 nits
    • Includes fall detection
      Xiaomi Watch S4 supports fall detection, the average smartwatch does not. 22.4% of smartwatches support fall detection.
      ski mode / Mi Fitness setup 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

      Xiaomi Watch S4 supports fall detection, the average smartwatch does not. 22.4% of smartwatches support fall detection.
    • 8 day/s longer battery life
      Xiaomi Watch S4 offers 15 day/s of battery life, while the average smartwatch offers 7 day/s.
      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

      Xiaomi Watch S4 offers 15 day/s of battery life, while the average smartwatch offers 7 day/s.15 day/s vs 7 day/s
    • 28 GB more storage
      Xiaomi Watch S4 offers more internal storage than the average smartwatch (32 GB vs 4 GB). The average smartwatch provides 4 GB of 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

      Xiaomi Watch S4 offers more internal storage than the average smartwatch (32 GB vs 4 GB). The average smartwatch provides 4 GB of storage.32 GB vs 4 GB
    • Has NFC
      Xiaomi Watch S4 supports NFC, the average smartwatch does not. 42.5% of smartwatches support NFC.
      NFC hardware is present, but functionality may be limited by region/app support.
      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

      Xiaomi Watch S4 supports NFC, the average smartwatch does not. 42.5% of smartwatches support NFC.
    • Has temperature sensor
      Xiaomi Watch S4 includes a temperature sensor, the average smartwatch does not. 22.3% of smartwatches include a temperature sensor.
      What it is: A sensor that records skin or wrist temperature changes and longer-term trends.
      When it matters: When you want health data from your wrist during the day or night.

      Importance: MEDIUM

      Xiaomi Watch S4 includes a temperature sensor, the average smartwatch does not. 22.3% of smartwatches include a temperature sensor.
    • Has HRV tracking
      Xiaomi Watch S4 supports HRV tracking, the average smartwatch does not. 38.2% of smartwatches support HRV tracking.
      HRV may be estimated from sleep/stress methods and not medical-grade.
      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

      Xiaomi Watch S4 supports HRV tracking, the average smartwatch does not. 38.2% of smartwatches support HRV tracking.
    • Supports Emergency SOS
      Xiaomi Watch S4 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

      Xiaomi Watch S4 includes Emergency SOS, the average smartwatch does not. 42.4% of smartwatches include Emergency SOS.
    • Has temperature sensor
      Xiaomi Watch S4 includes a temperature sensor, the average smartwatch does not. 22.3% of smartwatches include a temperature sensor.
    • Has HRV tracking
      Xiaomi Watch S4 supports HRV tracking, the average smartwatch does not. 38.2% of smartwatches support HRV tracking.
    • Has readiness score
      Xiaomi Watch S4 supports readiness scores, the average smartwatch does not. 18.4% of smartwatches support readiness scores.
    • Supports VO2 max
      Xiaomi Watch S4 measures VO2 max, the average smartwatch does not. 49.3% of smartwatches measure VO2 max.
    • Has irregular heart alerts
      Xiaomi Watch S4 supports irregular heart rate warnings, the average smartwatch does not. 43.7% of smartwatches support irregular heart rate warnings.
    • Has multi-sport mode
      Xiaomi Watch S4 includes a multi-sport mode, the average smartwatch does not. 49.4% of smartwatches include a multi-sport mode.
    • Has barometer
      Xiaomi Watch S4 includes a barometer, the average smartwatch does not. 45.6% of smartwatches include a barometer.
    • Has external HR monitor
      Xiaomi Watch S4 supports external heart rate monitor compatibility, the average smartwatch does not. 41.3% of smartwatches support external heart rate monitor compatibility.
    • 70 more exercise profiles
      Xiaomi Watch S4 supports more exercise modes than the average smartwatch (150 vs 80). The average smartwatch supports 80 exercise modes.
    • 8 day/s longer battery life
      Xiaomi Watch S4 offers 15 day/s of battery life, while the average smartwatch offers 7 day/s.
    • 186 mAh larger battery capacity
      Xiaomi Watch S4 has a larger battery capacity than the average smartwatch (486 mAh vs 300 mAh). The average smartwatch battery is 300 mAh.
    • 10 h longer training battery life
      Xiaomi Watch S4 lasts longer in training mode than the average smartwatch (30 h vs 20 h). The average smartwatch lasts 20 h.
    • Has NFC
      Xiaomi Watch S4 supports NFC, the average smartwatch does not. 42.5% of smartwatches support NFC.
    • Includes maps
      Xiaomi Watch S4 supports maps, the average smartwatch does not. 32.2% of smartwatches support maps.
    • Has compass
      Xiaomi Watch S4 includes a compass, the average smartwatch does not. 49.3% of smartwatches include a compass.
    • Supports Galileo
      Xiaomi Watch S4 supports Galileo navigation, the average smartwatch does not. 38.7% of smartwatches support Galileo navigation.
    • Newer Bluetooth version
      Xiaomi Watch S4 supports a newer Bluetooth version than the average smartwatch (5.3 vs 5.0). The average smartwatch uses 5.0.
    • 1,600 nits higher display brightness
      Xiaomi Watch S4 has higher display brightness than the average smartwatch (2,200 nits nits vs 600 nits nits). The average smartwatch reaches 600 nits nits.
    • Has rugged design
      Xiaomi Watch S4 has a rugged design, the average smartwatch does not. 34.5% of smartwatches have a rugged design.
    • Higher resolution
      Xiaomi Watch S4 has a display resolution of 466x 466, while the average smartwatch reaches 352x 430.
    • 135 ppi higher pixel density
      Xiaomi Watch S4 has a higher pixel density than the average smartwatch (461 ppi vs 326 ppi). The average smartwatch display reaches 326 ppi.
    • Stronger display glass
      Xiaomi Watch S4 uses Corning Gorilla Glass display glass, while the average smartwatch uses mineral glass.
    • Better case material
      Xiaomi Watch S4 uses aluminum, stainless steel for the case material, while the average smartwatch uses polycarbonate.
    • Better band material
      Xiaomi Watch S4 uses silicone, rubber, leather, nylon, stainless steel for the band material, while the average smartwatch uses silicone.
    • Includes fall detection
      Xiaomi Watch S4 supports fall detection, the average smartwatch does not. 22.4% of smartwatches support fall detection.
    • Supports Emergency SOS
      Xiaomi Watch S4 includes Emergency SOS, the average smartwatch does not. 42.4% of smartwatches include Emergency SOS.
    • More advanced operating system
      Xiaomi Watch S4 runs a more advanced operating system than the average smartwatch (HyperOS vs Proprietary OS).
    • More frequent updates
      Xiaomi Watch S4 receives occasional software updates, while the average smartwatch receives ended updates.
    • 28 GB more storage
      Xiaomi Watch S4 offers more internal storage than the average smartwatch (32 GB vs 4 GB). The average smartwatch provides 4 GB of storage.
    • 3 year/s newer release date
      Xiaomi Watch S4 has a newer release date than the average smartwatch (2024 vs 2021). The average smartwatch was released in 2021.

    Total
    Overall
    Health
    Fitness
    Battery
    Connectivity
    Display & Design
    Smart features
    Hardware
    • No smart scales
      Xiaomi Watch S4 does not support smart scale compatibility, the average smartwatch does. 56.8% of smartwatches support smart scale compatibility.
    • No voice feedback
      Xiaomi Watch S4 does not support voice feedback, the average smartwatch does. 62.1% of smartwatches support voice feedback.
    • 5.3 mm wider watch width
      Xiaomi Watch S4 is wider than the average smartwatch (47.3 mm vs 42.0 mm). The average smartwatch width is 42.0 mm.
    • Slower CPU speed
      Xiaomi Watch S4 uses a CPU configuration of 0.5 GHz, while the average smartwatch uses 1 GHz.
    • No voice feedback
      Xiaomi Watch S4 does not support voice feedback, the average smartwatch does. 62.1% of smartwatches support voice feedback.
      What it is: Spoken prompts that report pace, laps, instructions, or other activity updates.
      When it matters: When you want to control the watch or reply without typing.

      Importance: LOW

      Xiaomi Watch S4 does not support voice feedback, the average smartwatch does. 62.1% of smartwatches support voice feedback.
    • No smart scales
      Xiaomi Watch S4 does not support smart scale compatibility, the average smartwatch does. 56.8% of smartwatches support smart scale compatibility.
      What it is: Compatibility with smart scales for syncing weight and body-composition data.
      When it matters: When you want the watch to work with fitness gear and other accessories.

      Importance: LOW

      Xiaomi Watch S4 does not support smart scale compatibility, the average smartwatch does. 56.8% of smartwatches support smart scale compatibility.
    • Slower CPU speed
      Xiaomi Watch S4 uses a CPU configuration of 0.5 GHz, while the average smartwatch uses 1 GHz.
      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

      Xiaomi Watch S4 uses a CPU configuration of 0.5 GHz, while the average smartwatch uses 1 GHz.0.5 GHz vs 1 GHz
    • 5.3 mm wider watch width
      Xiaomi Watch S4 is wider than the average smartwatch (47.3 mm vs 42.0 mm). The average smartwatch width is 42.0 mm.
      What it is: The horizontal dimension of the watch case.
      When it matters: When you wear the watch all day or sleep with it on.

      Importance: MEDIUM

      Good value: <=39 mm

      Xiaomi Watch S4 is wider than the average smartwatch (47.3 mm vs 42.0 mm). The average smartwatch width is 42.0 mm.47.3 mm vs 42.0 mm
    Total
    Health
    Fitness
    Display & Design
    Hardware

    Graphic comparison of Xiaomi Watch S4 and other Smartwatches

    Attribute category
    Attribute
    No results found

    Third-party reviews

    amazon
    4.4
    488 Reviews
    amazon
    4.6
    368 Reviews
    amazon
    5.0
    1 Reviews

    (Reviews last updated: Apr 2026)

    What customers like about Xiaomi Watch S4?

    • Premium build quality and stylish design that punches above its budget price point
    • Unique interchangeable bezel system and standard 22mm straps allow for extensive physical customisation
    • Bright and vibrant AMOLED display (up to 2200 nits) ensures excellent visibility even in direct sunlight
    • Smooth and responsive user experience powered by Xiaomi's HyperOS
    • Excellent battery life, typically lasting around one week with moderate to heavy usage, outperforming many competitors
    • Reliable heart rate monitoring that performs well even during high-intensity gym sessions

    What customers dislike about Xiaomi Watch S4?

    • Limited notification functionality with no support for emojis or direct replies
    • Lack of a third-party app store and limited support for popular services like Spotify or WhatsApp
    • Inconsistent sleep tracking that frequently overestimates deep sleep duration
    • Restrictive NFC payment ecosystem with very limited bank compatibility in most regions
    • GNSS/GPS performance can be inconsistent, particularly in dense urban environments
    • Automatic brightness sensor can be overly conservative or buggy indoors

    Expert reviews

    G
    gadgetvoize.com
    16/11/2025
    Xiaomi Watch S4 41mm Review: Elegance Meets Endurance

    The Xiaomi Watch S4 41mm offers a refined, compact design (32g, 9.5mm) with a 1.32-inch 1,500-nit AMOLED display, making it ideal for smaller wrists, according to GadgetVoize. It features a stainless steel frame and, while lacking the interchangeable bezel of the larger model, provides a durable, stylish build. Gadget VoizePowered by HyperOS 3, the device excels with over 150 sports...Read more

    R
    racunalniske-novice.com
    27/02/2026
    Test Xiaomi Watch S4 – it's a good watch for the money

    The Xiaomi Watch S4 is highlighted as a high-value, stylish wearable featuring a 1.43-inch, 2,200-nit AMOLED display and a unique interchangeable bezel system for customization. It offers robust fitness tracking with 150+ sports modes, dual-frequency GNSS, and an impressive battery life lasting up to 15 days. However, limitations include a lack of third-party app support,...Read more

    M
    me.pcmag.com
    27/02/2026
    Xiaomi Watch S4 Review - PCMag Middle East

    The Xiaomi Watch S4 offers a premium, budget-friendly experience featuring a 1.43-inch AMOLED display with 2200-nit brightness, a unique, interchangeable bezel system, and a rotating crown for improved navigation. Running on HyperOS 2.0, it supports over 150 activity modes with dual-band GPS and provides comprehensive health tracking, including a one-tap 60-second vitals report....Read more

    L
    livescience.com
    27/02/2026
    Xiaomi Watch S4 smartwatch review: Affordable elegance

    The Xiaomi Watch S4 is highlighted as a highly customizable, budget-friendly wearable featuring an interchangeable bezel system and a bright 1.43-inch AMOLED display. It offers impressive battery life of up to 15 days, alongside comprehensive health tracking capabilities, including a 60-second "one-tap" health overview and accurate dual-frequency GPS. However, the review notes...Read more

    G
    gadgetsandwearables.com
    02/03/2025
    Xiaomi Watch S4 review: A bright screen and a bezel that keeps things fresh

    The Xiaomi Watch S4 is a stylish, high-value wearable featuring a unique, interchangeable bezel system for customization and a bright 1.43-inch AMOLED display reaching 2200 nits. Running on HyperOS 2.0 with a new rotating crown, the device offers smooth navigation, 150+ sports modes, and improved dual-frequency GPS. While boasting a premium aluminum alloy build and 5-6 day battery...Read more

    S
    smartwatchcentral.co.uk
    05/01/2026
    Xiaomi Watch S4 41mm Review | Smartwatch Central

    The Xiaomi Watch S4 41mm offers a premium, compact design with a polished stainless steel body and a highly fluid interface driven by HyperOS 3.0. Key strengths include a vibrant 1500-nit, 1.32-inch AMOLED display and a reliable heart rate sensor. However, the device suffers from a overly conservative auto-brightness, inconsistent GNSS tracking in cities, and "wonky" sleep tracking....Read more

    C
    cgmagonline.com
    01/04/2025
    Xiaomi Watch S4 Smartwatch Review

    The Xiaomi Watch S4 offers a premium, customizable experience with its 1.43-inch AMOLED display, 2,200-nit brightness, and interchangeable bezels, operating on the smooth HyperOS 2.0. It boasts comprehensive fitness tracking with 150+ modes, a fast "Health Checkup" tool, and exceptional battery life lasting up to 15 days. Key limitations include the lack of third-party app support,...Read more

    W
    wareable.com
    07/10/2025
    Xiaomi Watch S4 (41mm) review: Style over substance

    The Xiaomi Watch S4 41mm is characterized as a budget-friendly, fashionable wearable that prioritizes aesthetics with its premium stainless steel design, vibrant 1.32-inch AMOLED display, and a 41mm case suitable for smaller wrists. While praised for its high-end look and solid basic, daily health tracking, the device is hindered by "style over substance" issues, including limited...Read more

    T
    t3.com
    05/03/2025
    Xiaomi Watch S4 review: a budget smartwatch that feels high-end but has its limits

    The Xiaomi Watch S4 offers a premium, customizable design with an aluminium frame and interchangeable bezels, powered by a bright 1.43-inch AMOLED display. Running on HyperOS with a tactile crown, the device delivers a fluid experience and features over 150 sports modes paired with reliable dual-frequency GNSS. Key strengths include an impressive 15-day battery life, although...Read more

    S
    smartzone.de
    31/12/2025
    (41mm) Review

    The Xiaomi Watch S4 41mm offers a premium, compact design featuring a polished stainless steel body, a functional rotating crown, and a bright 1.32-inch AMOLED display. While the screen boasts 1,500 nits peak brightness, the automatic brightness setting is often too dim indoors. Core strengths include its build quality, while a notable limitation is the conservative auto-brightness....Read more

    (Translated)Show original
    B
    beyondpixels.de
    30/10/2025
    41 mm im Praxistest – eine schöne Überraschung

    The Beyond Pixels review highlights the Xiaomi Watch S4 41 mm as a stylish, lightweight (32g) wearable with a 1.32-inch AMOLED display, 1,500 nits brightness, and a comfortable, elegant stainless steel design. Powered by HyperOS 3.0 and the T1 chipset, it offers smooth navigation, alongside comprehensive health tracking including heart rate, skin temperature, and sleep analysis....Read more

    (Translated)Show original
    C
    connect.de
    25/03/2025
    In review: Good price, long battery life

    The Xiaomi Watch S4 is a stylish, well-built wearable featuring an innovative interchangeable bezel system and a bright 1.43-inch AMOLED display (2,200 nits). It boasts exceptional battery life lasting up to 15 days, rapid charging, and a fluid HyperOS 2 interface. However, the device is limited by a sparse third-party app ecosystem, lack of advanced, interactive notifications, and...Read more

    (Translated)Show original
    H
    heise.de
    17/08/2025
    Under Review: This Budget Sports Smartwatch is an Insider Tip

    The Xiaomi Watch S4 is a budget-friendly, stylish smartwatch featuring a 1.43-inch AMOLED display and a unique interchangeable bezel system, making it a "secret tip" for those seeking premium design at a lower price point. It offers extensive sports tracking with over 150 profiles, precise dual-frequency GPS, and advanced running metrics, along with a specialized ski mode with...Read more

    (Translated)Show original
    C
    chip.de
    08/07/2025
    CHIP Review

    The Xiaomi Watch S4 features a 1.43-inch, 2,200-nit OLED display and a versatile, interchangeable bezel system for a customizable, high-quality design. It boasts over four days of battery life, fast charging under 50 minutes, and 98% accurate heart rate tracking, although it lacks ECG and blood pressure monitoring. Performance is limited by a lack of third-party apps and basic...Read more

    (Translated)Show original
    N
    nerdsheaven.de
    30/10/2025
    New Smartwatch with Modular Bezel and Precision Sensors

    The Xiaomi Watch S4 is a budget-friendly smartwatch highlighting a unique, interchangeable bezel system, a premium aluminum frame, and a bright 2,200-nit 1.43-inch AMOLED display. It features a functional rotating crown for HyperOS navigation and offers over 150 sports modes paired with dual-frequency GNSS for accurate tracking, although sleep tracking, according to reviews, can be...Read more

    (Translated)Show original
    R
    racunalniske-novice.com
    24/03/2025
    Xiaomi Watch S4 review: excellent value for money

    The Xiaomi Watch S4 is highlighted as a high-value, stylish smartwatch featuring a 1.43-inch AMOLED display with a 2200-nit peak brightness and a unique, customizable interchangeable bezel system. Powered by HyperOS, it offers robust fitness tracking with over 150 sports modes, although some users may find the sleep tracking to be inconsistent. While the device boasts a long battery...Read more

    (Translated)Show original
    N
    nextpit.fr
    30/05/2025
    Xiaomi Watch S4 review: 15-day battery life for 160 euros

    The Xiaomi Watch S4 features a customizable design with interchangeable bezels and a bright 1.43-inch AMOLED screen, powered by a fluid HyperOS interface. It offers strong health tracking with accurate dual-band GNSS, over 150 sports modes, and long battery life of up to 15 days. Despite these strengths, the device lacks sapphire glass protection, has limited app support, and cannot...Read more

    (Translated)Show original
    0
    01net.com
    24/03/2025
    Xiaomi Watch S4 Review: Our opinion on the smartwatch

    The Xiaomi Watch S4 features a 1.43-inch, 2200-nit AMOLED display and introduces a functional rotating crown for smoother navigation within HyperOS, while retaining the unique interchangeable bezel system for style customization. Key performance highlights include highly accurate health monitoring, dual-band GPS, and a robust battery life of up to 15 days, positioning it as a...Read more

    (Translated)Show original
    F
    frandroid.com
    24/06/2025
    Xiaomi Watch S4 Review: A customizable watch with excellent battery life

    The Xiaomi Watch S4 is a highly customizable smartwatch featuring interchangeable bezels and a bright 1.43-inch AMOLED display (up to 2,200 nits), offering a premium design that balances style with functionality. It excels in battery life, boasting up to 15 days of usage, with fast charging capability. However, its slightly bulky, "chunky" design may not suit smaller wrists, and the...Read more

    (Translated)Show original
    L
    leclaireur.fnac.com
    28 août 2025
    Xiaomi Watch S4: Our Hands-On

    The Xiaomi Watch S4 is a customizable, affordable smartwatch featuring an interchangeable bezel system and a bright 1.43-inch AMOLED display, running on HyperOS 2 with improved navigation. Key pros include excellent value, a premium design, and a long-lasting battery offering up to 15 days of use. However, cons include a limited app ecosystem and restricted NFC contactless payments,...Read more

    (Translated)Show original
    S
    smartwatchcentral.co.uk
    5 janvier 2026
    Xiaomi Watch S4 41mm Review

    The Xiaomi Watch S4 41mm is a stylish, lightweight wearable featuring a premium stainless steel design and a bright, 1.32-inch AMOLED display, offering strong value for its price point. Performance highlights include the fluid HyperOS 3, a tactile rotating crown, and accurate heart rate monitoring for fitness, though the GNSS accuracy is weak in urban areas. While it lacks extensive...Read more

    (Translated)Show original
    J
    journaldugeek.com
    23 décembre 2025
    Xiaomi Watch S4 Review: The smartwatch that plays the style card

    The Xiaomi Watch S4 is a budget-friendly smartwatch focusing on customizable style with its unique, swappable bezel system and a bright 1.43-inch AMOLED display (2200 nits). It features a premium rotating crown for navigation and runs on Xiaomi’s HyperOS, offering high performance, over 150 sports modes, and up to 15 days of battery life. While offering great value, the watch...Read more

    (Translated)Show original
    F
    frandroid.com
    5 octobre 2025
    Xiaomi Watch S4 41 mm Review: Our Full Verdict

    The Xiaomi Watch S4 41mm offers a premium, lightweight design (32g) with a 1.32-inch AMOLED screen and a unique, jewel-set crown option. Running HyperOS 3, it delivers a smooth experience with over 150 sports modes and accurate, 4-LED heart rate monitoring. While it boasts a competitive 4-day battery life and fast 45-minute charging, it lacks in advanced smart features, such as...Read more

    (Translated)Show original
    N
    new.c.mi.com
    03/03/2026
    Xiaomi Watch S4 Review at MWC 2025: Would you like details on specific testing points, such as GPS accuracy or real-world battery life?

    The Xiaomi 12 Lite is a sleek, mid-range smartphone featuring a 6.55-inch 120Hz AMOLED display with Dolby Vision and a lightweight, premium design. Powered by the Snapdragon 778G, it delivers reliable daily performance. Key advantages include rapid 67W charging, a vibrant screen, and a 32MP selfie camera with autofocus. However, the device has limitations, including a smaller...Read more

    (Translated)Show original
    C
    c.mi.com
    Octobre 2025
    41 mm - My experience after 2 weeks of use

    The Xiaomi Watch S1 Active is a lightweight, sport-focused smartwatch featuring a 1.43-inch AMOLED screen, 117 fitness modes, and dual-band GPS for precise tracking. Key advantages include its comfortable, lightweight design, impressive battery life of up to 12 days, functional Bluetooth calling, and NFC for payments. However, the device is limited by a sparse third-party app...Read more

    (Translated)Show original
    J
    journaldugeek.com
    12 mai 2025
    Xiaomi Watch S4 Review: Customisable style at a killer price, but watch out for the trade-offs

    The Journal du Geek review describes the Xiaomi Watch S4 as a highly customizable, budget-friendly wearable that successfully blends premium aesthetics with, at times, restrictive functional compromises. Key strengths include an innovative interchangeable bezel system, a 1.43-inch AMOLED display with 2,200 nits peak brightness, and strong 15-day battery life. However, the device...Read more

    (Translated)Show original
    L
    lesnumeriques.com
    12/03/2026
    Xiaomi Watch S4 Review: The Affordable and Long-Lasting Smartwatch

    The Xiaomi Watch S4 is a refined, affordable smartwatch featuring a 1.43-inch AMOLED display with 2,200 nits peak brightness and a unique, swappable bezel system. Navigating HyperOS 2.0 is improved by a new rotating crown, enhancing user experience. Key pros include 15-day battery life, accurate health tracking with dual-frequency GNSS, and a durable 5ATM water-resistant aluminium...Read more

    (Translated)Show original
    L
    larazon.es
    13/04/2025
    Xiaomi Watch S4 Review: A Solid Experience with Some Notable Omissions

    The Xiaomi Watch S4 is a customizable mid-range device featuring a unique interchangeable bezel system and a vibrant 1.43-inch AMOLED display with 2,200 nits peak brightness. It operates on HyperOS 2 with a rotating crown, providing a fluid, premium experience that includes robust fitness tracking with over 150 modes and dual-frequency GNSS. Key advantages include an impressive...Read more

    (Translated)Show original
    E
    evosmart.it
    05 Ottobre 2025
    Xiaomi Watch S4 41mm Review: Balancing Style and Substance

    The Xiaomi Watch S4 41mm offers a balanced, compact design with a 1.32-inch, 1,500-nit AMOLED display, providing a premium, durable experience supported by HyperOS 3.0. Key advantages include a functional rotating crown for navigation, reliable Bluetooth calling, and a solid 7–10 day battery life (3-4 with Always-On Display), alongside comprehensive health tracking, including skin...Read more

    (Translated)Show original
    D
    debestesmartwatch.nl
    21/11/2025
    41mm Smartwatch Review - Our Honest Opinion

    The Xiaomi Watch S4 41mm is a compact, premium-feeling device featuring a stainless steel frame and a bright 1.32-inch AMOLED display (1,500 nits) that excels in readability, though the auto-brightness can be too conservative indoors. While praised for its 32g lightweight design and responsive rotating crown, it falls short in GPS accuracy in urban areas. For fitness, the device...Read more

    (Translated)Show original
    C
    consumentenbond.nl
    7 maart 2025
    Black - Test, Reviews & Prices

    The Xiaomi Watch S4 Black is a competitively priced smartwatch featuring a premium aluminium design with unique, swappable, and interchangeable bezels for customization. It offers a vibrant 1.43-inch AMOLED display with up to 2,200 nits brightness and a rotating crown for navigation. The device excels in battery life, lasting up to 15 days, though heavy use or the Always-On Display...Read more

    (Translated)Show original
    A
    androidworld.nl
    19/04/2025
    Smartwatch Review: Where Price-Performance is a Superpower

    The Xiaomi Watch S4 is a high-value smartwatch featuring a 1.43-inch AMOLED display with 2,200 nits brightness and a unique, interchangeable bezel system for customization. It operates on HyperOS 2.0 with a responsive rotating crown and offers robust health tracking with 98.2% accurate heart rate monitoring and over 150 sports modes. A major advantage is the battery life, which...Read more

    (Translated)Show original

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