Amazfit · 2021
GTR 3 Size, Dimensions & Wrist Fit
The GTR 3 looks in proportion on wrists of 16.5 cm (6.5 in) and up round, and fills the wrist at 17–19 cm (lug-to-lug estimated at ≈52.5mm; Amazfit does not publish it).
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Does the GTR 3 fit your wrist?
| Wrist round (mm left each side) | 45.8mm≈52.5mm lug to lug, est. |
|---|---|
| 14 cm / 5.5 in | Overhangs (3.7mm over) |
| 15 cm / 5.9 in | Overhangs (2.1mm over) |
| 16 cm / 6.3 in | Overhangs (0.4mm over) |
| 17 cm / 6.7 in | Bold (1.2mm) |
| 18 cm / 7.1 in | Sweet spot (2.8mm) |
| 19 cm / 7.5 in | Sweet spot (4.4mm) |
| 20 cm / 7.9 in | Balanced (6mm) |
The GTR 3 in short
- Compared with the previous GTR 2, it is 0.6mm narrower and 7g lighter.
- Replaced by the GTR 4, which is 0.2mm thinner and 2g heavier.
- 32g on the wrist. Lighter than 100% of the 71 smartwatches 46mm across that we have weights for.
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Size, fit and battery side by side, against any smartwatch we list.
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GTR 3 battery life
Runtime by power mode
- Battery Saver35 days
- Smartwatch21 days
- Heavy use35 hours
- GPS35 hours
Charges in 2 hours
Where it ranks among Amazfit watches
- Everyday use21 days#6 of 54
- GPS tracking35 hours#10 of 29
- Power save35 days#7 of 25
- Capacity450 mAh#10 of 52
2D Dimension Schematics
- Amazfit GTR 3 45.8mm × ≈52.5mm (est.) · 10.8mm thick
3D preview
Amazfit GTR 3 on a wrist
What size band does the GTR 3 take?
Lug width
22mm
Standard spring-bar lugs: any 22mm strap with quick-release pins fits, Amazfit's or anyone else's.
Alternatives to the GTR 3
GTR 3 specifications
- Battery life
- 21 days
- Display
- 1.39 inches
- Resolution
- 454 x 454 px
- Water rating
- 5 ATM
- Strap
- 22 mm
- Charging
- 2 hours
Show all specificationsAmazfit's published specification, for reference · checked September 2026
Design
- width
- 45.8
- height
- 45.8
- volume
- 22.65 cm³
- weight
- 32 g
- thickness
- 10.8
- ATM rating
- 5 ATM
- resolution
- 454 x 454 px
- screen size
- 1.39 inches
- Display type
- OLED/AMOLED
- Has a display
- Yes
- pixel density
- 326 ppi
- width of band
- 22 mm
- water resistance
- Waterproof
- Always-On Display
- Yes
- has a touch screen
- Yes
- waterproof depth rating
- 50 m
- Watch band is replaceable
- Yes
- Has sapphire glass display
- No
- has branded damage-resistant glass
- No
Battery
- charge time
- 2 hours
- battery life
- 21 days
- battery power
- 450 mAh
- has wireless charging
- No
- has a removable battery
- No
- battery life with GPS on
- 35 hours
- Has a solar power battery
- No
- has a rechargeable battery
- Yes
- battery life in training mode
- 35 hours
- battery life in power save mode
- 840 hours
Sensors
- has GPS
- Yes
- has a compass
- Yes
- Has a barometer
- Yes
- has a gyroscope
- Yes
- 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
- 2021-10-12
- Has a stopwatch
- Yes
- Has smart alarm
- No
- warranty period
- 1 years
- Has call control
- Yes
- Has silent alarm
- Yes
- has HRV tracking
- No
- measures VO2 max
- Yes
- Has notifications
- Yes
- Has ECG technology
- No
- Locates your phone
- Yes
- has a front camera
- No
- has fall detection
- No
- has voice commands
- Yes
- Acquires GPS faster
- No
- Has vibrating alerts
- Yes
- number of microphones
- 1
- shows readiness level
- No
- Can be used to answer calls
- No
- measures resting heart rate
- Yes
- has irregular heart rate warnings
- Yes
- has fast/slow heart rate notifications
- Yes
- Has a built-in camera remote control function
- Yes
Connectivity
- has NFC
- No
- supports ANT+
- No
- supports Wi-Fi
- No
- supports Galileo
- Yes
- Bluetooth version
- 5.1
- has a cellular module
- No
- Is compatible with iOS
- Yes
- Is compatible with Android
- Yes
Miscellaneous
- has aptX
- No
- Has passcode
- Yes
- Has auto pause
- Yes
- Is compatible with Windows
- No
- Is compatible with Mac OS X
- No
- has an external memory slot
- No
- Compatible with smart scales
- Yes
- has a battery level indicator
- Yes
- has a socket for a 3.5 mm audio jack
- No
- Compatible with external heart rate monitors
- Yes
App & Software
- Ad-free
- Yes
- Free app
- Yes
- Tracks BMI
- Yes
- Has coaching
- Yes
- Includes maps
- Yes
- Supports routes
- Yes
- Has achievements
- Yes
- Has goal setting
- Yes
- Has live tracking
- Yes
- Has exercise diary
- Yes
- Predicts ovulation
- Yes
- Can be personalised
- Yes
- Has weight tracking
- Yes
- Predicts start date
- Yes
- Tracks water intake
- Yes
- Has inactivity alerts
- Yes
- Has period notifications
- Yes
- Has temperature tracking
- No
- Provides activity reports
- Yes
- Displays fertile window notifications
- 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
- Yes
- Has exercise tagging
- Yes
- Has multi-sport mode
- Yes
- Tracks calorie intake
- Yes
- Provides sleep reports
- Yes
- Detects activities automatically
- Yes
- Has a stroke counter for swimming
- Yes
