Umidigi · 2020
Uwatch 3S Size, Dimensions & Wrist Fit
The Uwatch 3S looks in proportion on wrists of 15.5 cm (6.1 in) and up round, and fills the wrist at 16.5–18.5 cm (lug-to-lug estimated at ≈50.5mm; Umidigi does not publish it).
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Does the Uwatch 3S fit your wrist?
The 41.6mm suits wrists of about 15 cm and up round; the 44mm, 15.5 cm and up. Both work from 15.5 to 21.5 cm, where it is a choice between more skin either side (the 41.6mm) and a case that fills the wrist (the 44mm). Under 15.5 cm only the 41.6mm's lugs stay on the wrist.
| Wrist round (mm left each side) | 41.6mm≈48mm lug to lug, est. | 44mm≈50.5mm lug to lug, est. |
|---|---|---|
| 14 cm / 5.5 in | Overhangs (1.4mm over) | Overhangs (2.7mm over) |
| 15 cm / 5.9 in | Bold (0.2mm) | Overhangs (1.1mm over) |
| 16 cm / 6.3 in | Sweet spot (1.8mm) | Bold (0.6mm) |
| 17 cm / 6.7 in | Sweet spot (3.4mm) | Sweet spot (2.2mm) |
| 18 cm / 7.1 in | Balanced (5mm) | Sweet spot (3.8mm) |
| 19 cm / 7.5 in | Balanced (6.6mm) | Balanced (5.4mm) |
| 20 cm / 7.9 in | Balanced (8.3mm) | Balanced (7mm) |
The Uwatch 3S in short
- The 41.6mm version is 2.4mm narrower, 1.3mm thinner and 13g heavier.
- The same case size, thickness and weight as the previous Uwatch 2S (within half a millimetre and a gram).
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Size, fit and battery side by side, against any smartwatch we list.
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Uwatch 3S battery life
Published runtime
- Battery life15 days
Where it ranks among Umidigi watches
- Everyday use15 days#2 of 6
Top three in the Umidigi range for everyday (smartwatch) use.
See all 6 Umidigi watches ranked by battery lifeSettings to change and the 24-hour idle test are on the battery check.
2D Dimension Schematics
- Umidigi Uwatch 3S 44mm × ≈50.5mm (est.) · 12.9mm thick
3D preview
Umidigi Uwatch 3S on a wrist
What size band does the Uwatch 3S take?
Lug width
22mm
Alternatives to the Uwatch 3S
Uwatch 3S specifications
- Battery life
- 15 days
- Display
- 1.3 inches
- Resolution
- 240 x 240 px
- Water rating
- Water resistant
- Strap
- 22 mm
- Charging
- 2.5 hours
Show all specificationsUmidigi's published specification, for reference · checked September 2026
Design
- width
- 44
- height
- 44
- volume
- 24.97 cm³
- weight
- 25 g
- thickness
- 12.9
- resolution
- 240 x 240 px
- screen size
- 1.3 inches
- Display type
- LCD
- Has a display
- Yes
- pixel density
- 261 ppi
- width of band
- 22 mm
- water resistance
- Water resistant
- Always-On Display
- No
- has a touch screen
- Yes
- Watch band is replaceable
- Yes
- Has sapphire glass display
- No
- has branded damage-resistant glass
- No
Battery
- charge time
- 2.5 hours
- battery life
- 15 days
- has wireless charging
- Yes
- has a removable battery
- No
- Has a solar power battery
- No
- has a rechargeable battery
- Yes
Sensors
- has GPS
- No
- has a compass
- Yes
- Has a barometer
- No
- has a gyroscope
- No
- Has a cadence sensor
- No
- has an accelerometer
- Yes
- Monitors perspiration
- No
- Has a heart rate monitor
- Yes
- Has a temperature sensor
- No
- Monitors blood oxygenation levels
- Yes
Features
- release date
- 2020-10-21
- Has a stopwatch
- Yes
- Has smart alarm
- No
- Has call control
- Yes
- Has silent alarm
- Yes
- Has notifications
- Yes
- Has ECG technology
- No
- Locates your phone
- Yes
- has fall detection
- No
- Acquires GPS faster
- No
- Has vibrating alerts
- Yes
- Can be used to answer calls
- No
- has irregular heart rate warnings
- No
- Has a built-in camera remote control function
- No
Connectivity
- has NFC
- No
- supports ANT+
- No
- supports Wi-Fi
- No
- has a cellular module
- No
- Is compatible with iOS
- Yes
- Is compatible with Android
- Yes
Miscellaneous
- Has auto pause
- No
- Is compatible with Windows
- Yes
- Is compatible with Mac OS X
- No
- has an external memory slot
- No
- has a battery level indicator
- Yes
- has a socket for a 3.5 mm audio jack
- No
App & Software
- Ad-free
- Yes
- Free app
- Yes
- Has coaching
- No
- Supports routes
- No
- Has achievements
- Yes
- Has goal setting
- Yes
- Has exercise diary
- Yes
- Can be personalised
- Yes
- Has weight tracking
- Yes
- Tracks water intake
- Yes
- Has inactivity alerts
- Yes
- Has temperature tracking
- No
- Doesn’t require account
- Yes
- Provides activity reports
- Yes
- Counts how many calories you've burned
- Yes
Activity tracking
- Measures pace
- Yes
- Tracks distance
- Yes
- Tracks elevation
- Yes
- Designed for golf
- No
- Tracks your sleep
- Yes
- Tracks steps taken
- Yes
- Designed for diving
- No
- Has a route tracker
- No
- Has exercise tagging
- No
- Has multi-sport mode
- No
- Tracks calorie intake
- Yes
- Provides sleep reports
- Yes
- Detects activities automatically
- Yes
- Has a stroke counter for swimming
- No
