Amazfit · 2019
Stratos 3 Size, Dimensions & Wrist Fit
The Stratos 3 looks in proportion on wrists of 17.5 cm (6.9 in) and up round, and fills the wrist at 18.5–20.5 cm (lug-to-lug estimated at ≈56mm; Amazfit does not publish it).
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Does the Stratos 3 fit your wrist?
| Wrist round (mm left each side) | 48.6mm≈56mm lug to lug, est. |
|---|---|
| 14 cm / 5.5 in | Overhangs (5.4mm over) |
| 15 cm / 5.9 in | Overhangs (3.8mm over) |
| 16 cm / 6.3 in | Overhangs (2.2mm over) |
| 17 cm / 6.7 in | Overhangs (0.6mm over) |
| 18 cm / 7.1 in | Bold (1mm) |
| 19 cm / 7.5 in | Sweet spot (2.6mm) |
| 20 cm / 7.9 in | Sweet spot (4.3mm) |
The Stratos 3 in short
- 40.4g on the wrist. Lighter than 100% of the 7 smartwatches 49mm across that we have weights for.
- Between 70 hours and 14 days per charge depending on the power mode — battery saver at best, gps at worst.
- Water rated to 50 m.
- 1.34 inches LCD display, always-on capable.
- Takes 22mm bands, so third-party straps fit without an adapter.
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Size, fit and battery side by side, against any smartwatch we list.
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Stratos 3 battery life
Runtime by power mode
- Battery Saver14 days
- Smartwatch7 days
- GPS70 hours
Charges in 2.5 hours
Where it ranks among Amazfit watches
- Everyday use7 days#47 of 54
- GPS tracking70 hours#2 of 29
- Power save14 days#22 of 25
- Capacity300 mAh#28 of 52
Top three in the Amazfit range for continuous GPS tracking.
See all 54 Amazfit watches ranked by battery life2D Dimension Schematics
- Amazfit Stratos 3 48.6mm × ≈56mm (est.) · 13.4mm thick
3D preview
Amazfit Stratos 3 on a wrist
What size band does the Stratos 3 take?
Lug width
22mm
Alternatives to the Stratos 3
Stratos 3 specifications
- Battery life
- 7 days
- Display
- 1.34 inches
- Resolution
- 320 x 320 px
- Water rating
- 5 ATM
- Glass
- Gorilla Glass 3
- Strap
- 22 mm
- Storage
- 4GB
- Charging
- 2.5 hours
Show all specificationsAmazfit's published specification, for reference · checked September 2026
Design
- width
- 48.6
- height
- 48.6
- volume
- 31.65 cm³
- weight
- 40.4 g
- thickness
- 13.4
- ATM rating
- 5 ATM
- resolution
- 320 x 320 px
- screen size
- 1.34 inches
- Display type
- LCD
- Has a display
- Yes
- pixel density
- 338 ppi
- width of band
- 22 mm
- water resistance
- Waterproof
- Always-On Display
- Yes
- has a touch screen
- Yes
- Gorilla Glass version
- Gorilla Glass 3
- waterproof depth rating
- 50 m
- Watch band is replaceable
- Yes
- Has sapphire glass display
- No
- has branded damage-resistant glass
- Yes
Battery
- charge time
- 2.5 hours
- battery life
- 7 days
- battery power
- 300 mAh
- has wireless charging
- No
- has a removable battery
- No
- battery life with GPS on
- 70 hours
- Has a solar power battery
- No
- has a rechargeable battery
- Yes
- battery life in power save mode
- 336 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
- No
Features
- RAM
- 0.5GB
- CPU speed
- 2 x 1.2 GHz
- release date
- 2019-08-27
- Has a stopwatch
- Yes
- Has smart alarm
- No
- Has call control
- Yes
- Has silent alarm
- Yes
- internal storage
- 4GB
- 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
- 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
- Wi-Fi version
- Wi-Fi 4 (802.11n)
- supports ANT+
- No
- supports Wi-Fi
- Yes
- supports Galileo
- Yes
- Bluetooth version
- 4.2
- has a cellular module
- No
- Is compatible with iOS
- Yes
- Is compatible with Android
- Yes
Miscellaneous
- has aptX
- No
- Has passcode
- Yes
- Can upload maps
- Yes
- maximum Bluetooth range
- 10 m
- 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
- Supports routes
- Yes
- Has achievements
- Yes
- Has goal setting
- Yes
- Has exercise diary
- Yes
- Can be personalised
- Yes
- Has weight tracking
- No
- Predicts start date
- Yes
- Tracks water intake
- No
- Has inactivity alerts
- Yes
- Has period notifications
- Yes
- Has temperature tracking
- No
- 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
- Yes
- Has exercise tagging
- Yes
- Has multi-sport mode
- Yes
- Tracks calorie intake
- No
- Provides sleep reports
- Yes
- Detects activities automatically
- Yes
- Has a stroke counter for swimming
- Yes
