Amazfit Bip 3 Pro vs Amazfit Bip 5 UnitySize, Specs & Wrist Fit Compared
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Amazfit
Bip 3 Pro
Amazfit
Bip 5 Unity
Which one fits you
On wrists narrower than about 48mm, the Amazfit Bip 3 Pro is the safer pick — it stays proportionate down to roughly 46mm, where the Amazfit Bip 5 Unity starts to hang over the edge. Above 48mm both sit cleanly, and the Amazfit Bip 5 Unity gives you more presence.
The Amazfit Bip 5 Unity wears larger than the Amazfit Bip 3 Pro (37.08mm vs 36.4mm case), giving it more wrist presence — and needing a wider wrist to sit cleanly.
On the wrist the Amazfit Bip 5 Unity feels lighter (25g vs 33.2g, case only).
The Amazfit Bip 3 Pro is middle-of-the-pack for thickness among the 125 36mm watches in the database.
Among the 58 37mm watches we hold thickness for, the Amazfit Bip 5 Unity is thinner than 79%, so it wears flatter than its width suggests.
Specification Comparison
| Spec | AmazfitBip 3 Pro | AmazfitBip 5 Unity |
|---|---|---|
| Case Width | 36.4mm | 37.08mm |
| Lug-to-Lug | 44.1mm | 45.8mm |
| Thickness | 9.6mm | 10mm |
| Weight | 33.2g | 25g |
| Shape | Rectangle | Rectangle |
| Water Resistance | 5 ATM | Water resistant |
| GPS | Yes | No |
| Display | 1.69 inches | 1.91 inches |
| Always-On Display | No | No |
| Battery life | 14 days | 11 days |
| Battery power | 280 mAh | 300 mAh |
| Has wireless charging | Yes | Yes |
| Has a removable battery | No | No |
| Has a solar power battery | No | No |
| Has a rechargeable battery | Yes | Yes |
| Has a battery level indicator | Yes | Yes |
| Charge time | — | 2 hours |
| Battery life in training mode | — | 5 hours |
| Battery life in power save mode | — | 26 hours |
| Released | 2022 | — |
Battery life compared
The two are closest in everyday use and furthest apart in Smartwatch mode, where one lasts 1.3× as long as the other (14 days against 11 days).
Amazfit Bip 3 ProAmazfit Bip 5 Unity
Smartwatch
14 days11 daysBattery Saver
—26 hoursTraining
—5 hours
Full Specification Comparison
116 specs| Spec | Amazfit Bip 3 Pro | Amazfit Bip 5 Unity |
|---|---|---|
| Design | ||
| width | 36.4 | 37.08 |
| height | 44.1 | 45.8 |
| volume | 15.41 cm³ | 16.98 cm³ |
| weight | 33.2 g | 25 g |
| thickness | 9.6 | 10 |
| ATM rating | 5 ATM | — |
| resolution | 240 x 280 px | 320 x 380 px |
| screen size | 1.69 inches | 1.91 inches |
| Display type | LCD | LCD |
| Has a display | Yes | Yes |
| pixel density | 218 ppi | 260 ppi |
| width of band | 20 mm | 22 mm |
| water resistance | Waterproof | Water resistant |
| Always-On Display | No | No |
| has a touch screen | Yes | Yes |
| waterproof depth rating | 50 m | — |
| Watch band is replaceable | Yes | Yes |
| Has sapphire glass display | No | No |
| Ingress Protection (IP) rating | IP68 | IP68 |
| has branded damage-resistant glass | No | No |
| is designed for kids | — | No |
| Battery | ||
| battery life | 14 days | 11 days |
| battery power | 280 mAh | 300 mAh |
| has wireless charging | Yes | Yes |
| has a removable battery | No | No |
| Has a solar power battery | No | No |
| has a rechargeable battery | Yes | Yes |
| charge time | — | 2 hours |
| battery life in training mode | — | 5 hours |
| battery life in power save mode | — | 26 hours |
| Sensors | ||
| has GPS | Yes | No |
| has a compass | No | No |
| Has a barometer | No | No |
| has a gyroscope | No | No |
| Has a cadence sensor | No | No |
| has an accelerometer | Yes | Yes |
| Monitors perspiration | No | No |
| Has a heart rate monitor | Yes | Yes |
| Has a temperature sensor | No | Yes |
| Monitors blood oxygenation levels | Yes | Yes |
| Features | ||
| release date | 2022-06-16 | — |
| Has a stopwatch | Yes | Yes |
| Has smart alarm | No | No |
| warranty period | 1 years | 1 years |
| Has call control | No | Yes |
| Has silent alarm | Yes | Yes |
| has HRV tracking | No | Yes |
| measures VO2 max | Yes | No |
| Has notifications | Yes | Yes |
| Has ECG technology | No | — |
| Locates your phone | Yes | — |
| has a front camera | No | No |
| has fall detection | No | — |
| has voice commands | No | No |
| Acquires GPS faster | No | No |
| Has vibrating alerts | Yes | Yes |
| number of microphones | 0 | — |
| shows readiness level | No | Yes |
| Can be used to answer calls | No | Yes |
| measures resting heart rate | Yes | Yes |
| has irregular heart rate warnings | Yes | Yes |
| has fast/slow heart rate notifications | Yes | Yes |
| Has a built-in camera remote control function | No | No |
| Connectivity | ||
| has NFC | No | No |
| supports ANT+ | No | — |
| supports Wi-Fi | No | No |
| supports Galileo | Yes | No |
| Bluetooth version | 5 | 5.2 |
| has a cellular module | No | No |
| Is compatible with iOS | Yes | Yes |
| Is compatible with Android | Yes | Yes |
| Miscellaneous | ||
| has aptX | No | — |
| Has passcode | Yes | Yes |
| Has auto pause | Yes | Yes |
| Is compatible with Windows | No | No |
| Is compatible with Mac OS X | No | No |
| has an external memory slot | No | No |
| Compatible with smart scales | Yes | Yes |
| has a battery level indicator | Yes | Yes |
| has a socket for a 3.5 mm audio jack | No | No |
| Compatible with external heart rate monitors | Yes | Yes |
| App & Software | ||
| Ad-free | Yes | Yes |
| Free app | Yes | Yes |
| Tracks BMI | Yes | Yes |
| Has coaching | Yes | Yes |
| Includes maps | Yes | Yes |
| Supports routes | Yes | Yes |
| Has achievements | Yes | Yes |
| Has goal setting | Yes | Yes |
| Has live tracking | Yes | Yes |
| Has exercise diary | Yes | Yes |
| Predicts ovulation | Yes | Yes |
| Can be personalised | Yes | Yes |
| Has weight tracking | Yes | Yes |
| Predicts start date | Yes | Yes |
| Tracks water intake | Yes | Yes |
| Has inactivity alerts | Yes | Yes |
| Has period notifications | Yes | Yes |
| Has temperature tracking | No | Yes |
| Provides activity reports | Yes | Yes |
| Displays fertile window notifications | Yes | Yes |
| Counts how many calories you've burned | Yes | Yes |
| Activity tracking | ||
| Measures pace | Yes | Yes |
| Tracks distance | Yes | Yes |
| Tracks elevation | Yes | Yes |
| Designed for golf | No | No |
| Tracks your sleep | Yes | Yes |
| Tracks steps taken | Yes | Yes |
| Designed for diving | No | No |
| Has a route tracker | Yes | Yes |
| Has exercise tagging | Yes | Yes |
| Has multi-sport mode | No | No |
| Tracks calorie intake | Yes | Yes |
| Provides sleep reports | Yes | Yes |
| Detects activities automatically | Yes | Yes |
| Has a stroke counter for swimming | Yes | No |
Wrist Fit
Amazfit Bip 3 Pro
Sits best on wrists ~46–63mm wide (≈ 12.3–16.8cm circumference).
Amazfit Bip 5 Unity
Sits best on wrists ~48–65mm wide (≈ 12.8–17.4cm circumference).
2D Dimension Schematics
Accurate scale drawings based on case dimensions. Drag to pan, Ctrl+scroll to zoom. Works for every watch regardless of photo availability.
Frequently Asked Questions
Is the Amazfit Bip 3 Pro bigger than the Amazfit Bip 5 Unity?
The Amazfit Bip 5 Unity is bigger — 37.08mm vs 36.4mm case width.
Which fits a smaller wrist better, the Amazfit Bip 3 Pro or the Amazfit Bip 5 Unity?
The Amazfit Bip 3 Pro suits wrists around 46–63mm wide, and the Amazfit Bip 5 Unity around 48–65mm. The one with the smaller lower bound is the safer pick for a small wrist.
Can I see the Amazfit Bip 3 Pro and Amazfit Bip 5 Unity side by side at true scale?
Yes — the schematics and photos above show both watches at matched scale, and our fit tool overlays each on your wrist width.