Amazfit Bip 6 vs Xiaomi Watch S4 41mm
Size, specs & wrist fit compared
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Which one fits you
On wrists narrower than about 49mm, the Xiaomi Watch S4 41mm is the safer pick — it stays proportionate down to roughly 43mm, where the Amazfit Bip 6 starts to hang over the edge. Above 49mm both sit cleanly, and the Amazfit Bip 6 gives you more presence.
The Xiaomi Watch S4 41mm wears larger than the Amazfit Bip 6 (41.2mm vs 40.2mm case), giving it more wrist presence — and needing a wider wrist to sit cleanly.
The Xiaomi Watch S4 41mm is the slimmer of the two (9.5mm vs 10.45mm), so it slides under a cuff more easily.
On the wrist the Amazfit Bip 6 feels lighter (27.9g vs 32g, case only).
The Amazfit Bip 6 is middle-of-the-pack for thickness among the 530 40mm watches in the database.
Among the 370 41mm watches we hold thickness for, the Xiaomi Watch S4 41mm is thinner than 98%, so it wears flatter than its width suggests.
The Xiaomi Watch S4 41mm is 1mm wider, 5.1mm shorter, 0.9mm thinner and 4.1g heavier than the Amazfit Bip 6.
Amazfit
Bip 6
Xiaomi
Watch S4 41mm
Switch or add watches
Amazfit
Bip 6
Xiaomi
Watch S4 41mm
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)
Xiaomi Watch S4 41mm
Case 41.2mm · Lug-to-lug 41.2mm · Thickness 9.5mm · 32g
Balanced Fit
41.2mm 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 41.2mm, 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 wrist6.9mm spare each side
Comfortable, with visible skin either side.
- Off the wrist9.5mm off the skin
Sits low enough to disappear under a cuff. (9.5mm case, back against the skin)
- How it seats~3.8mm under the rim
Seats well, with the case back following most of the wrist.
- Weight on the wrist32g
Light enough to forget you have it on. (0.6g 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
- Xiaomi Watch S4 41mm41.2mm · 9.5mm thick
3D preview
Amazfit Bip 6 vs Xiaomi Watch S4 41mm 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 Smartwatch mode, where the Amazfit Bip 6 lasts 1.8× as long as the Xiaomi Watch S4 41mm (14 days against 8 days).
Amazfit Bip 6Xiaomi Watch S4 41mm
Battery Saver
624 hours—Smartwatch
14 days8 daysGPS
32 hours—Training
14 hours—
Specifications
The short version
11 key specs| Spec | AmazfitBip 6 | XiaomiWatch S4 41mm |
|---|---|---|
| Case Width | 40.2mm | 41.2mm |
| Lug-to-Lug | 46.3mm | 41.2mm |
| Thickness | 10.45mm | 9.5mm |
| Weight | 27.9g | 32g |
| Shape | Rectangle | Circular |
| Water Resistance | 5 ATM | 5 ATM |
| GPS | Yes | Yes |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Screen size | 1.97 inches | 1.32 inches |
| Battery life | 14 days | 8 days |
| Released | 2025 | 2025 |
Every specification
119 specs| Spec | Amazfit Bip 6 | Xiaomi Watch S4 41mm |
|---|---|---|
| Design | ||
| width | 40.2 | 41.2 |
| height | 46.3 | 41.2 |
| volume | 19.45 cm³ | 16.13 cm³ |
| weight | 27.9 g | 32 g |
| thickness | 10.45 | 9.5 |
| ATM rating | 5 ATM | 5 ATM |
| resolution | 390 x 450 px | 466 x 466 px |
| screen size | 1.97 inches | 1.32 inches |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Has a display | Yes | Yes |
| pixel density | 302 ppi | 320 ppi |
| width of band | 22 mm | — |
| water resistance | Water resistant | Waterproof |
| Always-On Display | Yes | Yes |
| has a touch screen | Yes | Yes |
| is designed for kids | No | No |
| waterproof depth rating | 50 m | — |
| Watch band is replaceable | Yes | Yes |
| Has sapphire glass display | No | Yes |
| Ingress Protection (IP) rating | IP68 | — |
| has branded damage-resistant glass | No | No |
| Battery | ||
| charge time | 2 hours | — |
| battery life | 14 days | 8 days |
| battery power | 340 mAh | 320 mAh |
| has wireless charging | No | No |
| has a removable battery | No | No |
| battery life with GPS on | 32 hours | — |
| Has a solar power battery | No | No |
| has a rechargeable battery | Yes | Yes |
| battery life in training mode | 14 hours | — |
| battery life in power save mode | 624 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 | 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 | 2025-04-02 | 2025-06-26 |
| Has a stopwatch | Yes | Yes |
| Has smart alarm | No | No |
| warranty period | 1 years | 1 years |
| Has call control | Yes | Yes |
| Has silent alarm | Yes | Yes |
| has HRV tracking | Yes | Yes |
| internal storage | 0.5GB | 32GB |
| 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 | Yes |
| Has vibrating alerts | Yes | Yes |
| number of microphones | 1 | 1 |
| shows readiness level | Yes | Yes |
| Can be used to answer calls | Yes | Yes |
| measures resting heart rate | Yes | Yes |
| has irregular heart rate warnings | Yes | No |
| has fast/slow heart rate notifications | Yes | Yes |
| Has a built-in camera remote control function | Yes | Yes |
| Connectivity | ||
| has NFC | No | Yes |
| supports ANT+ | No | No |
| supports Wi-Fi | No | No |
| supports Galileo | Yes | Yes |
| Bluetooth version | 5.2 | 5.4 |
| has a cellular module | No | Yes |
| Is compatible with iOS | Yes | Yes |
| Is compatible with Android | Yes | Yes |
| SIM cards | — | 1 eSIM |
| Miscellaneous | ||
| Has passcode | Yes | Yes |
| Has auto pause | 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 | — |
| 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 | — |
| App & Software | ||
| Ad-free | Yes | Yes |
| Free app | Yes | Yes |
| Tracks BMI | Yes | — |
| Has coaching | Yes | No |
| Includes maps | Yes | Yes |
| Supports routes | Yes | No |
| Has achievements | Yes | Yes |
| Has goal setting | Yes | Yes |
| Has live tracking | 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 | — |
| Counts how many calories you've burned | Yes | Yes |
| Doesn’t require account | — | No |
| Activity tracking | ||
| Measures pace | Yes | Yes |
| Tracks distance | Yes | Yes |
| Tracks elevation | Yes | Yes |
| Designed for golf | 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).
Xiaomi Watch S4 41mm
Sits best on wrists ~43–59mm wide (≈ 11.5–15.8cm circumference).
Frequently Asked Questions
Is the Amazfit Bip 6 bigger than the Xiaomi Watch S4 41mm?
The Xiaomi Watch S4 41mm is bigger — 41.2mm vs 40.2mm case width.
Which fits a smaller wrist better, the Amazfit Bip 6 or the Xiaomi Watch S4 41mm?
The Amazfit Bip 6 suits wrists around 49–66mm wide, and the Xiaomi Watch S4 41mm around 43–59mm. The one with the smaller lower bound is the safer pick for a small wrist.
Can I see the Amazfit Bip 6 and Xiaomi Watch S4 41mm 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.