Amazfit · 2019
Stratos 3Size, Dimensions & Wrist Fit
The Amazfit Stratos 3 sits best on flat wrist widths of about 51–69mm (≈ 13.6–18.4cm wrist circumference). Adjust the slider below to check your wrist.
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The Stratos 3 in short
The figures that decide whether this watch suits you, pulled out of the full specification sheet further down.
- Between 70 hours and 336 hours per charge depending on the power mode — battery saver at best, gps at worst.
- Water rated to 50 m.
- 40.4g on the wrist. Lighter than 100% of the 49mm watches we have weights for.
- 1.34 inches LCD display, always-on capable.
- Takes 22mm bands, so third-party straps fit without an adapter.
Does the Stratos 3 fit your wrist?
Drag the slider to your wrist width and see the Stratos 3 overlaid at true scale. Lug-to-lug — not case diameter — decides whether a watch overhangs your wrist.
Watch Fit Tool
For sports watches, lug-to-lug (L2L) is what matters most — it decides whether a watch overhangs your wrist. Bulky is fine; overhang is not.
Measure at the point where you wear your watch — typically just below the wrist bone.
Flat width — lay your arm on a table, palm facing up, and measure straight across the top of your wrist with a ruler. Bone to bone; do not follow the curve down the sides.
Around — wrap a tape measure snugly round the wrist. No tape? Wrap a strip of paper, mark the overlap and hold the strip against a ruler.
Width ≠ circumference. They are different numbers — around 170mm is about 64mm across — so set the toggle to whichever one you actually measured before you type it in.
Amazfit Stratos 3
Case 48.6mm · Lug-to-lug 48.6mm · Thickness 13.4mm · 40g
Sweet Spot
48.6mm on a 55mm wrist
Across the wrist it works — 3.2mm spare each side — but wide enough that the edge of the case back lifts clear of the skin.
On a 55mm wrist the sweet spot is 47–53mm lug to lug. This one is 48.6mm.
Measure where you wear it, just below the wrist bone. Either of these works — the tool converts between them.
- 1. Flat width — arm flat on a table, palm up. Measure straight across the top of the wrist, bone to bone, ignoring the curve down the sides.
- 2. Around — a tape, or a strip of paper marked and held against a ruler, snug the whole way round.
Leather: Attaches at the lugs, so the case back rests on your skin. Thins and softens with wear. Typical figures, not this model’s own.
Show the measurementsHide the measurements
- Across the wrist3.2mm spare each side
Fills the wrist without reaching the edge.
- Off the wrist13.4mm off the skin
Normal sports-watch height for a wrist this size. (13.4mm case, back against the skin)
- How it seats~7.0mm under the rim
Wide enough that the edge of the case back lifts clear of the skin.
- Weight on the wrist40g
Light enough to forget you have it on. (0.7g per mm of wrist)
Happy with the fit? Check current availability for the Stratos 3.
Check offer2D Dimension Schematics
The Stratos 3 drawn to scale — from above, and in profile against the wrist.
- Amazfit Stratos 348.6mm · 13.4mm thick
3D preview
Amazfit Stratos 3 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 Stratos 3 lasts, by power mode
Runtime changes by a factor of 5 depending on what you leave switched on. Bars are scaled against the longest mode.
- Battery Saver336 hours
- Smartwatch7 days
- GPS70 hours
How the Stratos 3 ranks on battery
Against the 54 Amazfit watches in our database, ranked on each figure Amazfit publishes.
- Everyday use7 days#46 of 54
- GPS tracking70 hours#2 of 29
- Power save14 days#22 of 25
- Capacity300 mAh#23 of 52
Top three in the Amazfit range for continuous GPS tracking.
See all 54 Amazfit watches ranked by battery lifeWhat size band does the Stratos 3 take?
Lug width
22mm
Any 22mm strap fits, so you are not restricted to Amazfit'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.
Stratos 3 specifications
The figures that decide a purchase, followed by every line Amazfit publishes.
- 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
Full specification sheet
109 published lines across 8 groups, unedited
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
- pixel density
- 338 ppi
- width of band
- 22 mm
- water resistance
- Waterproof
- Always-On Display
- has a touch screen
- Gorilla Glass version
- Gorilla Glass 3
- waterproof depth rating
- 50 m
- Watch band is replaceable
- Has sapphire glass display
- has branded damage-resistant glass
Battery
- charge time
- 2.5 hours
- battery life
- 7 days
- battery power
- 300 mAh
- has wireless charging
- has a removable battery
- battery life with GPS on
- 70 hours
- Has a solar power battery
- has a rechargeable battery
- battery life in power save mode
- 336 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
- RAM
- 0.5GB
- CPU speed
- 2 x 1.2 GHz
- release date
- 2019-08-27
- Has a stopwatch
- Has smart alarm
- Has call control
- Has silent alarm
- internal storage
- 4GB
- 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
- Can be used to answer calls
- has irregular heart rate warnings
- 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
- 4.2
- has a cellular module
- Is compatible with iOS
- Is compatible with Android
Miscellaneous
- has aptX
- Has passcode
- Can upload maps
- maximum Bluetooth range
- 10 m
- Is compatible with Windows
- Is compatible with Mac OS X
- has an external memory slot
- Compatible with smart scales
- has a battery level indicator
- has a socket for a 3.5 mm audio jack
- Compatible with external heart rate monitors
App & Software
- Ad-free
- Free app
- Tracks BMI
- Supports routes
- Has achievements
- Has goal setting
- Has exercise diary
- Can be personalised
- Has weight tracking
- Predicts start date
- Tracks water intake
- Has inactivity alerts
- Has period notifications
- Has temperature tracking
- Provides activity reports
- 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 Stratos 3
Watches that cover a similar amount of wrist, with the measurements that separate them.
Amazfit
T-Rex Pro
- Width
- 47.7mm
- Thick
- 13.5mm
- Weight
- 59.4g
Amazfit
Balance 2
- Width
- 47.4mm
- Thick
- 12.3mm
- Weight
- 43g
Amazfit
Pop 2
- Width
- 47.2mm
- Thick
- 12.9mm
- Weight
- 64g
Amazfit
Falcon
- Width
- 47.2mm
- Thick
- 13mm
- Weight
- 64g
Amazfit
GTR
- Width
- 47.2mm
- Thick
- 10.75mm
- Weight
- 48g
Amazfit
Active Edge
- Width
- 46.6mm
- Thick
- 12mm
- Weight
- 34g
Stratos 3 — Frequently Asked Questions
Will the Amazfit Stratos 3 fit my wrist?
The Amazfit Stratos 3 looks balanced on flat wrist widths of roughly 51–69mm (about 13.6–18.4cm circumference). Drag the slider above to check it against your own measurement.
What size band does the Amazfit Stratos 3 take?
22mm. Any 22mm strap fits, so you are not limited to Amazfit's own bands — look for a quick-release fitting if you want to swap without tools.
How long does the Amazfit Stratos 3 battery last?
Between 70 hours and 336 hours per charge, depending on the power mode. Amazfit rates Battery Saver at 336 hours and GPS at 70 hours; the chart above lists all 3 modes.
How does the Amazfit Stratos 3 battery compare with other Amazfit watches?
At 7 days in everyday use it ranks #46 of the 54 Amazfit watches in our database — below the middle of the range. The full ranking, including GPS and power-saving figures, is on our Amazfit battery life comparison.
Is the Amazfit Stratos 3 thick for a 49mm watch?
At 13.4mm, middle of the pack for thickness at this width. Thickness, not case width, is what decides whether a watch catches on a shirt cuff.
What other watches are the same size as the Amazfit Stratos 3?
Huawei Watch Ultimate 2, Boult Audio Sterling Pro, Kospet Tank T2, Tissot Lepine Quartz all sit within half a millimetre of the Amazfit Stratos 3's 48.6mm case, so they cover the same amount of wrist.
