Bip 5 UnitySize, Dimensions & Wrist Fit
Case Width
37.08mm
Thickness
10mm
Lug-to-Lug
45.8mm
Weight
25g
The Amazfit Bip 5 Unity sits best on flat wrist widths of about 48–65mm (≈ 12.8–17.4cm wrist circumference). Adjust the slider below to check your wrist.
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The Bip 5 Unity in short
The figures that decide whether this watch suits you, pulled out of the full specification sheet further down.
- Between 5 hours and 11 days per charge depending on the power mode — smartwatch at best, training at worst.
- Water rated to Water resistant.
- 25g on the wrist. Lighter than 96% of the 37mm watches we have weights for.
- 1.91 inches LCD display.
- Takes 22mm bands, so third-party straps fit without an adapter.
Does the Bip 5 Unity fit your wrist?
Drag the slider to your wrist width and see the Bip 5 Unity 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 Bip 5 Unity
Case 45.8mm · Lug-to-lug 45.8mm · Thickness 10.0mm · 25g
Balanced Fit
45.8mm on a 55mm wrist
Comfortably inside the edges of your wrist, and it seats and sits low enough to wear without thinking about it.
On a 55mm wrist the sweet spot is 47–53mm lug to lug. This one is 45.8mm, 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 wrist4.6mm spare each side
Comfortable, with visible skin either side.
- Off the wrist10.0mm off the skin
Normal sports-watch height for a wrist this size. (10.0mm case, back against the skin)
- How it seats~5.5mm under the rim
Seats well, with the case back following most of the wrist.
- Weight on the wrist25g
Light enough to forget you have it on. (0.5g per mm of wrist)
Happy with the fit? Check current availability for the Bip 5 Unity.
Check offer2D Dimension Schematics
The Bip 5 Unity drawn to scale — from above, and in profile against the wrist.
- Amazfit Bip 5 Unity37.1mm × 45.8mm · 10mm thick
3D preview
Amazfit Bip 5 Unity 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 Bip 5 Unity lasts, by power mode
Runtime changes by a factor of 53 depending on what you leave switched on. Bars are scaled against the longest mode.
- Smartwatch11 days
- Battery Saver26 hours
- Training5 hours
How the Bip 5 Unity ranks on battery
Against the 54 Amazfit watches in our database, ranked on each figure Amazfit publishes.
- Everyday use11 days#35 of 54
- Power save26 hours#25 of 25
- Capacity300 mAh#23 of 52
What size band does the Bip 5 Unity 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.
Bip 5 Unity specifications
The figures that decide a purchase, followed by every line Amazfit publishes.
- Battery life
- 11 days
- Display
- 1.91 inches
- Resolution
- 320 x 380 px
- Water rating
- Water resistant
- Strap
- 22 mm
- Charging
- 2 hours
Full specification sheet
107 published lines across 8 groups, unedited
Design
- width
- 37.08
- height
- 45.8
- volume
- 16.98 cm³
- weight
- 25 g
- thickness
- 10
- resolution
- 320 x 380 px
- screen size
- 1.91 inches
- Display type
- LCD
- Has a display
- pixel density
- 260 ppi
- width of band
- 22 mm
- water resistance
- Water resistant
- Always-On Display
- has a touch screen
- is designed for kids
- Watch band is replaceable
- Has sapphire glass display
- Ingress Protection (IP) rating
- IP68
- has branded damage-resistant glass
Battery
- charge time
- 2 hours
- battery life
- 11 days
- battery power
- 300 mAh
- has wireless charging
- has a removable battery
- Has a solar power battery
- has a rechargeable battery
- battery life in training mode
- 5 hours
- battery life in power save mode
- 26 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
- Has a stopwatch
- Has smart alarm
- warranty period
- 1 years
- Has call control
- Has silent alarm
- has HRV tracking
- measures VO2 max
- Has notifications
- has a front camera
- has voice commands
- Acquires GPS faster
- Has vibrating alerts
- 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 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
- Has multi-sport mode
- Tracks calorie intake
- Provides sleep reports
- Detects activities automatically
- Has a stroke counter for swimming
Alternatives to the Bip 5 Unity
Watches that cover a similar amount of wrist, with the measurements that separate them.
Amazfit
GTS 4 Mini
- Width
- 36.66mm
- Thick
- 9.1mm
- Weight
- 19g
Amazfit
Bip 3
- Width
- 36.49mm
- Thick
- 9.65mm
- Weight
- 33.2g
Amazfit
Bip 3 Pro
- Width
- 36.4mm
- Thick
- 9.6mm
- Weight
- 33.2g
Amazfit
GTS - global version
- Width
- 36.25mm
- Thick
- 9.4mm
- Weight
- 24.8g
Amazfit
GTS
- Width
- 36.25mm
- Thick
- 9.4mm
- Weight
- 24.8g
Amazfit
Bip 5
- Width
- 38mm
- Thick
- 11.2mm
- Weight
- 26g
Bip 5 Unity — Frequently Asked Questions
Will the Amazfit Bip 5 Unity fit my wrist?
The Amazfit Bip 5 Unity looks balanced on flat wrist widths of roughly 48–65mm (about 12.8–17.4cm circumference). Drag the slider above to check it against your own measurement.
What size band does the Amazfit Bip 5 Unity 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 Bip 5 Unity battery last?
Between 5 hours and 11 days per charge, depending on the power mode. Amazfit rates Smartwatch at 11 days and Training at 5 hours; the chart above lists all 3 modes.
How does the Amazfit Bip 5 Unity battery compare with other Amazfit watches?
At 11 days in everyday use it ranks #35 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 Bip 5 Unity thick for a 37mm watch?
At 10mm, thinner than 79% of 37mm 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 Bip 5 Unity?
Zenith Defy A3643 Revival, Omega Museum Collection Seamaster Milano Cortina 2026 Winter Olympics, Kieslect Ks2, Noise ColorFit Icon 3 all sit within half a millimetre of the Amazfit Bip 5 Unity's 37.08mm case, so they cover the same amount of wrist.
What is the lug-to-lug of the Amazfit Bip 5 Unity?
45.8mm, against a 37.08mm 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.
