Amazfit · 2023
ActiveSize, Dimensions & Wrist Fit
Case Width
42.36mm
Thickness
10.75mm
Lug-to-Lug
35.9mm
Weight
27g
The Amazfit Active sits best on flat wrist widths of about 38–51mm (≈ 10.1–13.6cm wrist circumference). Adjust the slider below to check your wrist.
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The Active in short
The figures that decide whether this watch suits you, pulled out of the full specification sheet further down.
- Between 16 hours and 720 hours per charge depending on the power mode — battery saver at best, gps at worst.
- Water rated to 5 ATM.
- 27g on the wrist. Lighter than 95% of the 42mm watches we have weights for.
- 1.75 inches OLED/AMOLED display, always-on capable.
- Takes 20mm bands, so third-party straps fit without an adapter.
Does the Active fit your wrist?
Drag the slider to your wrist width and see the Active 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 Active
Case 35.9mm · Lug-to-lug 35.9mm · Thickness 10.8mm · 27g
Understated
35.9mm on a 55mm wrist
Well inside your wrist on every measurement — you have room to go a size up if you want more presence.
On a 55mm wrist the sweet spot is 47–53mm lug to lug. This one is 35.9mm, so you could go bigger.
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 wrist9.6mm spare each side
Comfortable, with visible skin either side.
- Off the wrist10.8mm off the skin
Normal sports-watch height for a wrist this size. (10.8mm case, back against the skin)
- How it seats~2.4mm under the rim
Sits flat on the wrist with contact right across the case back.
- Weight on the wrist27g
Light enough to forget you have it on. (0.5g per mm of wrist)
Happy with the fit? Check current availability for the Active.
Check offer2D Dimension Schematics
The Active drawn to scale — from above, and in profile against the wrist.
- Amazfit Active42.4mm × 35.9mm · 10.8mm thick
3D preview
Amazfit Active 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 Active lasts, by power mode
Runtime changes by a factor of 45 depending on what you leave switched on. Bars are scaled against the longest mode.
- Battery Saver720 hours
- Smartwatch14 days
- Training240 hours
- GPS16 hours
How the Active ranks on battery
Against the 54 Amazfit watches in our database, ranked on each figure Amazfit publishes.
- Everyday use14 days#13 of 54
- GPS tracking16 hours#27 of 29
- Power save30 days#8 of 25
- Capacity300 mAh#23 of 52
What size band does the Active take?
Lug width
20mm
Any 20mm 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 20mm 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.
Active specifications
The figures that decide a purchase, followed by every line Amazfit publishes.
- Battery life
- 14 days
- Display
- 1.75 inches
- Resolution
- 390 x 450 px
- Water rating
- 5 ATM
- Strap
- 20 mm
- Storage
- 0.25GB
- Charging
- 2 hours
Full specification sheet
112 published lines across 8 groups, unedited
Design
- width
- 42.36
- height
- 35.9
- volume
- 16.35 cm³
- weight
- 27 g
- thickness
- 10.75
- ATM rating
- 5 ATM
- resolution
- 390 x 450 px
- screen size
- 1.75 inches
- Display type
- OLED/AMOLED
- Has a display
- pixel density
- 341 ppi
- width of band
- 20 mm
- water resistance
- Water resistant
- Always-On Display
- has a touch screen
- is designed for kids
- Watch band is replaceable
- Has sapphire glass display
- has branded damage-resistant glass
Battery
- charge time
- 2 hours
- battery life
- 14 days
- battery power
- 300 mAh
- has wireless charging
- has a removable battery
- battery life with GPS on
- 16 hours
- Has a solar power battery
- has a rechargeable battery
- battery life in training mode
- 240 hours
- battery life in power save mode
- 720 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
- 2023-10-27
- Has a stopwatch
- Has smart alarm
- warranty period
- 1 years
- Has call control
- Has silent alarm
- has HRV tracking
- internal storage
- 0.25GB
- Has notifications
- Has ECG technology
- Locates your phone
- 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
- 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 passcode
- Has auto pause
- 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
- Has coaching
- Includes maps
- Supports routes
- Has achievements
- Has goal setting
- Has live tracking
- 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
- 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
- Tracks calorie intake
- Provides sleep reports
- Detects activities automatically
- Has a stroke counter for swimming
Compare the Active head to head
How each one differs in the three measurements you can feel on the wrist. Figures are relative to the Active.
Pixel Watch 4 - 41mm
- Width
- -1.4mm
- Thick
- +1.6mm
- Weight
- +4g
Huawei
Watch 5 - 42mm
- Width
- -0.4mm
- Thick
- -0.2mm
- Weight
- +24g
Garmin
Forerunner® 570 - 42mm
- Width
- same mm
- Thick
- +2.2mm
- Weight
- +15g
Amazfit
Bip 6
- Width
- -2.2mm
- Thick
- -0.3mm
- Weight
- +0.9g
Garmin
vívoactive 6
- Width
- -0.2mm
- Thick
- +0.2mm
- Weight
- -4g
Amazfit
Active 2
- Width
- +1.5mm
- Thick
- -0.8mm
- Weight
- +2.5g
Huawei
Watch GT 5 Pro 42 mm
- Width
- +0.1mm
- Thick
- -1.2mm
- Weight
- +17g
Pixel Watch 3 41mm
- Width
- -1.4mm
- Thick
- +1.6mm
- Weight
- +4g
Samsung
Galaxy Watch6 Classic - LTE · 43mm
- Width
- +0.1mm
- Thick
- +0.2mm
- Weight
- +25g
Samsung
Galaxy Watch6 Classic - Wi-Fi · 43mm
- Width
- +0.1mm
- Thick
- +0.2mm
- Weight
- +25g
Amazfit
Pop 3R
- Width
- +3.1mm
- Thick
- +0.1mm
- Weight
- +28.5g
Amazfit
GTR Mini
- Width
- +0.4mm
- Thick
- -1.5mm
- Weight
- +9.2g
Alternatives to the Active
Watches that cover a similar amount of wrist, with the measurements that separate them.
Active — Frequently Asked Questions
Will the Amazfit Active fit my wrist?
The Amazfit Active looks balanced on flat wrist widths of roughly 38–51mm (about 10.1–13.6cm circumference). Drag the slider above to check it against your own measurement.
What size band does the Amazfit Active take?
20mm. Any 20mm 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 Active battery last?
Between 16 hours and 720 hours per charge, depending on the power mode. Amazfit rates Battery Saver at 720 hours and GPS at 16 hours; the chart above lists all 4 modes.
How does the Amazfit Active battery compare with other Amazfit watches?
At 14 days in everyday use it ranks #13 of the 54 Amazfit watches in our database — the top 24% of the range. The full ranking, including GPS and power-saving figures, is on our Amazfit battery life comparison.
Is the Amazfit Active thick for a 42mm watch?
At 10.75mm, thinner than 87% of 42mm 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 Amazfit Active?
Certina DS Action Chrono PVD / Carbon / Bracelet, Omega Speedmaster Professional Moonwatch 3861 Moonshine Gold / Black Lacquer, TAG Heuer Carrera Chronograph Seafarer Stainless Steel / Silver, Huawei Watch 5 - 42mm all sit within half a millimetre of the Amazfit Active's 42.36mm case, so they cover the same amount of wrist.
What is the lug-to-lug of the Amazfit Active?
35.9mm, against a 42.36mm case width. Lug-to-lug is the measurement that decides overhang: if it exceeds the flat width of your wrist, the lugs sit past the edge no matter how modest the case diameter looks.
