Amazfit
Bip 6 vs GTR 4 Limited Edition
Size, specs & wrist fit compared
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Which one fits you
Both need much the same wrist — roughly 48–66mm across the flat of the wrist. Neither will fit where the other won't, so decide on thickness, weight and features instead.
The GTR 4 Limited Edition wears larger than the Bip 6 (46mm vs 40.2mm case), giving it more wrist presence — and needing a wider wrist to sit cleanly.
The Bip 6 is the slimmer of the two (10.45mm vs 11.2mm), so it slides under a cuff more easily.
On the wrist the Bip 6 feels lighter (27.9g vs 49g, case only).
The Bip 6 is middle-of-the-pack for thickness among the 530 40mm watches in the database.
Among the 211 46mm watches we hold thickness for, the GTR 4 Limited Edition is thinner than 84%, so it wears flatter than its width suggests.
The GTR 4 Limited Edition is 5.8mm wider, 0.3mm shorter, 0.8mm thicker and 21.1g heavier than the Bip 6.
Bip 6
GTR 4 Limited Edition
Switch or add watches
Amazfit
Bip 6
Amazfit
GTR 4 Limited Edition
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 6
Case 46.3mm · Lug-to-lug 46.3mm · Thickness 10.4mm · 28g
Balanced Fit
46.3mm 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 46.3mm, 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 wrist4.4mm spare each side
Comfortable, with visible skin either side.
- Off the wrist10.4mm off the skin
Normal sports-watch height for a wrist this size. (10.4mm case, back against the skin)
- How it seats~5.8mm under the rim
Seats well, with the case back following most of the wrist.
- Weight on the wrist28g
Light enough to forget you have it on. (0.5g per mm of wrist)
Amazfit GTR 4 Limited Edition
Case 46.0mm · Lug-to-lug 46.0mm · Thickness 11.2mm · 49g
Balanced Fit
46mm 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 46mm, 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 wrist4.5mm spare each side
Comfortable, with visible skin either side.
- Off the wrist11.2mm off the skin
Normal sports-watch height for a wrist this size. (11.2mm case, back against the skin)
- How it seats~5.6mm under the rim
Seats well, with the case back following most of the wrist.
- Weight on the wrist49g
Light enough to forget you have it on. (0.9g per mm of wrist)
2D Dimension Schematics
Every case drawn to scale on a shared centre — from above, and in profile against the wrist.
- Amazfit Bip 640.2mm × 46.3mm · 10.4mm thick
- Amazfit GTR 4 Limited Edition46mm · 11.2mm thick
3D preview
Bip 6 vs GTR 4 Limited Edition on a wrist
Sized to your own wrist, turned any way you like.
Shapes are built from published measurements, not manufacturer 3D models — accurate proportions, generic dial.
Battery life compared
Furthest apart in Training mode, where the GTR 4 Limited Edition lasts 13.7× as long as the Bip 6 (8 days against 14 hours).
Bip 6GTR 4 Limited Edition
Battery Saver
624 hours672 hoursSmartwatch
14 days14 daysGPS
32 hours336 hoursTraining
14 hours192 hours
Specifications
The short version
11 key specs| Spec | AmazfitBip 6 | AmazfitGTR 4 Limited Edition |
|---|---|---|
| Case Width | 40.2mm | 46mm |
| Lug-to-Lug | 46.3mm | 46mm |
| Thickness | 10.45mm | 11.2mm |
| Weight | 27.9g | 49g |
| Shape | Rectangle | Circular |
| Water Resistance | 5 ATM | 5 ATM |
| GPS | Yes | Yes |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Screen size | 1.97 inches | 1.43 inches |
| Battery life | 14 days | 14 days |
| Released | 2025 | 2023 |
Every specification
119 specs| Spec | Amazfit Bip 6 | Amazfit GTR 4 Limited Edition |
|---|---|---|
| Design | ||
| width | 40.2 | 46 |
| height | 46.3 | 46 |
| volume | 19.45 cm³ | 23.7 cm³ |
| weight | 27.9 g | 49 g |
| thickness | 10.45 | 11.2 |
| ATM rating | 5 ATM | 5 ATM |
| resolution | 390 x 450 px | 466 x 466 px |
| screen size | 1.97 inches | 1.43 inches |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Has a display | Yes | Yes |
| pixel density | 302 ppi | 326 ppi |
| width of band | 22 mm | 22 mm |
| water resistance | Water resistant | Waterproof |
| Always-On Display | Yes | Yes |
| has a touch screen | Yes | Yes |
| is designed for kids | No | — |
| waterproof depth rating | 50 m | 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 |
| Battery | ||
| charge time | 2 hours | 2 hours |
| battery life | 14 days | 14 days |
| battery power | 340 mAh | 475 mAh |
| has wireless charging | No | Yes |
| has a removable battery | No | No |
| battery life with GPS on | 32 hours | 336 hours |
| Has a solar power battery | No | No |
| has a rechargeable battery | Yes | Yes |
| battery life in training mode | 14 hours | 192 hours |
| battery life in power save mode | 624 hours | 672 hours |
| Sensors | ||
| has GPS | Yes | Yes |
| has a compass | Yes | Yes |
| Has a barometer | No | Yes |
| has a gyroscope | Yes | Yes |
| Has a cadence sensor | Yes | — |
| 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 | 2025-04-02 | 2023-04-24 |
| Has a stopwatch | Yes | Yes |
| Has smart alarm | No | Yes |
| warranty period | 1 years | 1 years |
| Has call control | Yes | Yes |
| Has silent alarm | Yes | Yes |
| has HRV tracking | Yes | — |
| internal storage | 0.5GB | — |
| measures VO2 max | Yes | Yes |
| Has notifications | Yes | Yes |
| Has ECG technology | No | No |
| Locates your phone | Yes | Yes |
| has a front camera | No | No |
| has fall detection | No | Yes |
| has voice commands | Yes | Yes |
| Acquires GPS faster | No | No |
| Has vibrating alerts | Yes | Yes |
| number of microphones | 1 | 1 |
| shows readiness level | Yes | — |
| Can be used to answer calls | Yes | Yes |
| measures resting heart rate | Yes | — |
| has irregular heart rate warnings | Yes | Yes |
| has fast/slow heart rate notifications | Yes | Yes |
| Has a built-in camera remote control function | Yes | Yes |
| Connectivity | ||
| has NFC | No | No |
| supports ANT+ | No | No |
| supports Wi-Fi | No | Yes |
| supports Galileo | Yes | No |
| Bluetooth version | 5.2 | 5 |
| has a cellular module | No | No |
| Is compatible with iOS | Yes | Yes |
| Is compatible with Android | Yes | Yes |
| Wi-Fi version | — | Wi-Fi 4 (802.11n) |
| Miscellaneous | ||
| 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 |
| has aptX | — | No |
| 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 | Yes | 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 | — |
| Tracks calorie intake | Yes | Yes |
| Provides sleep reports | Yes | Yes |
| Detects activities automatically | Yes | Yes |
| Has a stroke counter for swimming | Yes | Yes |
Wrist Fit
Amazfit Bip 6
Sits best on wrists ~49–66mm wide (≈ 13.1–17.6cm circumference).
Amazfit GTR 4 Limited Edition
Sits best on wrists ~48–66mm wide (≈ 12.8–17.6cm circumference).
Frequently Asked Questions
Is the Amazfit Bip 6 bigger than the Amazfit GTR 4 Limited Edition?
The Amazfit GTR 4 Limited Edition is bigger — 46mm vs 40.2mm case width.
Which fits a smaller wrist better, the Amazfit Bip 6 or the Amazfit GTR 4 Limited Edition?
The Amazfit Bip 6 suits wrists around 49–66mm wide, and the Amazfit GTR 4 Limited Edition around 48–66mm. The one with the smaller lower bound is the safer pick for a small wrist.
Can I see the Amazfit Bip 6 and Amazfit GTR 4 Limited Edition 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.