Xiaomi · 2021
Watch S1Size, Dimensions & Wrist Fit
The Xiaomi Watch S1 sits best on flat wrist widths of about 49–66mm (≈ 13.1–17.6cm wrist circumference). Adjust the slider below to check your wrist.
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The Watch S1 in short
The figures that decide whether this watch suits you, pulled out of the full specification sheet further down.
- Between 12 days and 576 hours per charge depending on the power mode — battery saver at best, smartwatch at worst.
- Water rated to 50 m.
- 11mm thick. Thinner than 85% of 47mm watches, so it slides under a cuff more easily than most of its size.
- 1.43 inches OLED/AMOLED display, always-on capable.
- Takes 22mm bands, so third-party straps fit without an adapter.
Does the Watch S1 fit your wrist?
Drag the slider to your wrist width and see the Watch S1 overlaid at true scale. Lug-to-lug — not case diameter — decides whether a watch overhangs your wrist.
Happy with the fit? Check current availability for the Watch S1.
Check offer2D Dimension Schematics
The Watch S1 drawn to scale — from above, and in profile against the wrist.
- Xiaomi Watch S146.5mm · 11mm thick
3D preview
Xiaomi Watch S1 on a wrist
On an arm sized to your own wrist — the view a product photo never gives you.
Shapes are built from published measurements, not manufacturer 3D models — accurate proportions, generic dial.
How long the Watch S1 lasts, by power mode
Runtime changes by a factor of 2 depending on what you leave switched on. Bars are scaled against the longest mode.
- Battery Saver576 hours
- Smartwatch12 days
How the Watch S1 ranks on battery
Against the 32 Xiaomi watches in our database, ranked on each figure Xiaomi publishes.
- Everyday use12 days#16 of 32
- Capacity470 mAh#14 of 32
What size band does the Watch S1 take?
Lug width
22mm
Any 22mm strap fits, so you are not restricted to Xiaomi's own bands. Quick-release pins let you swap without tools — check that a replacement lists 22mm and quick-release before buying.
Affiliate disclosure: As an Amazon Associate, WatchFitTool earns from qualifying purchases. If you buy through links on this page, we may earn a commission at no extra cost to you. Learn more.
Watch S1 specifications
The figures that decide a purchase, followed by every line Xiaomi publishes.
- Battery life
- 12 days
- Display
- 1.43 inches
- Resolution
- 466 x 466 px
- Water rating
- 5 ATM
- Strap
- 22 mm
Full specification sheet
109 published lines across 8 groups, unedited
Design
- width
- 46.5
- height
- 46.5
- volume
- 23.78 cm³
- weight
- 53 g
- thickness
- 11
- ATM rating
- 5 ATM
- resolution
- 466 x 466 px
- screen size
- 1.43 inches
- Display type
- OLED/AMOLED
- Has a display
- pixel density
- 326 ppi
- width of band
- 22 mm
- water resistance
- Waterproof
- Always-On Display
- has a touch screen
- waterproof depth rating
- 50 m
- Watch band is replaceable
- Has sapphire glass display
- maximum operating temperature
- 45 °C
- lowest potential operating temperature
- -10 °C
Battery
- battery life
- 12 days
- battery power
- 470 mAh
- has wireless charging
- has a removable battery
- Has a solar power battery
- has a rechargeable battery
- battery life in power save mode
- 576 hours
Sensors
- has GPS
- has a compass
- Has a barometer
- has a gyroscope
- Has a cadence sensor
- has an accelerometer
- Monitors perspiration
- Has a heart rate monitor
- Has a temperature sensor
- Monitors blood oxygenation levels
Features
- release date
- 2021-12-28
- Has a stopwatch
- Has smart alarm
- warranty period
- 1 years
- Has call control
- Has silent alarm
- has HRV tracking
- measures VO2 max
- Has notifications
- Has ECG technology
- Locates your phone
- has a front camera
- has fall detection
- has voice commands
- Acquires GPS faster
- Has vibrating alerts
- number of microphones
- 1
- shows readiness level
- Can be used to answer calls
- measures resting heart rate
- has irregular heart rate warnings
- has fast/slow heart rate notifications
- Has a built-in camera remote control function
Connectivity
- has NFC
- Wi-Fi version
- Wi-Fi 4 (802.11n)
- supports ANT+
- supports Wi-Fi
- supports Galileo
- Bluetooth version
- 5.2
- has a cellular module
- Is compatible with iOS
- Is compatible with Android
Miscellaneous
- has aptX
- Has passcode
- Is compatible with Windows
- Is compatible with Mac OS X
- has an external memory slot
- has a battery level indicator
- has a socket for a 3.5 mm audio jack
- Compatible with external heart rate monitors
App & Software
- Free app
- Has coaching
- Supports routes
- Has achievements
- Has goal setting
- Has exercise diary
- Predicts ovulation
- Can be personalised
- Has weight tracking
- Predicts start date
- Tracks water intake
- Has inactivity alerts
- Has period notifications
- Has temperature tracking
- Doesn’t require account
- Provides activity reports
- Displays fertile window notifications
- Counts how many calories you've burned
Activity tracking
- Measures pace
- Tracks distance
- Tracks elevation
- Designed for golf
- Tracks your sleep
- Tracks steps taken
- Designed for diving
- Has a route tracker
- Has exercise tagging
- Has multi-sport mode
- Tracks calorie intake
- Provides sleep reports
- Detects activities automatically
- Has a stroke counter for swimming
Alternatives to the Watch S1
Watches that cover a similar amount of wrist, with the measurements that separate them.
Xiaomi
Watch S1 Active
- Width
- 46.5mm
- Thick
- 11mm
- Weight
- 36g
Xiaomi
Watch Color - Sport Edition · 53.3mm
- Width
- 46.2mm
- Thick
- 11.4mm
- Weight
- 32.5g
Xiaomi
Watch Color - 53.3mm
- Width
- 46.2mm
- Thick
- 11.4mm
- Weight
- —
Xiaomi
Watch S4 Sport
- Width
- 46.9mm
- Thick
- 12.6mm
- Weight
- 49g
Xiaomi
Watch 5
- Width
- 47mm
- Thick
- 12.3mm
- Weight
- 56g
Xiaomi
Watch S3 eSIM
- Width
- 47mm
- Thick
- 12mm
- Weight
- 44g
Watch S1 — Frequently Asked Questions
Will the Xiaomi Watch S1 fit my wrist?
The Xiaomi Watch S1 looks balanced on flat wrist widths of roughly 49–66mm (about 13.1–17.6cm circumference). Drag the slider above to check it against your own measurement.
What size band does the Xiaomi Watch S1 take?
22mm. Any 22mm strap fits, so you are not limited to Xiaomi's own bands — look for a quick-release fitting if you want to swap without tools.
How long does the Xiaomi Watch S1 battery last?
Between 12 days and 576 hours per charge, depending on the power mode. Xiaomi rates Battery Saver at 576 hours and Smartwatch at 12 days; the chart above lists all 2 modes.
How does the Xiaomi Watch S1 battery compare with other Xiaomi watches?
At 12 days in everyday use it ranks #16 of the 32 Xiaomi watches in our database — the top 50% of the range. The full ranking, including GPS and power-saving figures, is on our Xiaomi battery life comparison.
Is the Xiaomi Watch S1 thick for a 47mm watch?
At 11mm, thinner than 85% of 47mm watches, so it slides under a cuff more easily than most of its size. Thickness, not case width, is what decides whether a watch catches on a shirt cuff.
What other watches are the same size as the Xiaomi Watch S1?
Oppo Watch X3, CMF Watch 3 Pro, Amazfit Balance 2, Garmin Forerunner® 570 - 47mm all sit within half a millimetre of the Xiaomi Watch S1's 46.5mm case, so they cover the same amount of wrist.
