Huawei Watch 4 Pro vs Xiaomi Watch S4
Size, specs & wrist fit compared
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Which one fits you
Both need much the same wrist — roughly 50–68mm across the flat of the wrist. Neither will fit where the other won't, so decide on thickness, weight and features instead.
The Huawei Watch 4 Pro and Xiaomi Watch S4 share a near-identical 47.6mm case, so wrist presence comes down to thickness, lug-to-lug and weight.
The Xiaomi Watch S4 is the slimmer of the two (12mm vs 12.9mm), so it slides under a cuff more easily.
On the wrist the Xiaomi Watch S4 feels lighter (44.5g vs 65g, case only).
The Huawei Watch 4 Pro is thinner than 77% of the 48mm watches we track and the Xiaomi Watch S4 than 92% of the 47mm ones — so both wear flatter than their widths suggest.
The Huawei Watch 4 Pro is 0.3mm wider, 0.3mm longer, 0.9mm thicker and 20.5g heavier than the Xiaomi Watch S4. Both are circular.
Huawei
Watch 4 Pro
Xiaomi
Watch S4
Switch or add watches
Huawei
Watch 4 Pro
Xiaomi
Watch S4
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.
Huawei Watch 4 Pro
Case 47.6mm · Lug-to-lug 47.6mm · Thickness 12.9mm · 65g
Sweet Spot
47.6mm on a 55mm wrist
Across the wrist it works — 3.7mm spare each side — but wide enough that the edge of the case back lifts clear of the skin.
On a 55mm wrist the sweet spot is 47–53mm lug to lug. This one is 47.6mm.
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 wrist3.7mm spare each side
Fills the wrist without reaching the edge.
- Off the wrist12.9mm off the skin
Normal sports-watch height for a wrist this size. (12.9mm case, back against the skin)
- How it seats~6.4mm under the rim
Wide enough that the edge of the case back lifts clear of the skin.
- Weight on the wrist65g
Substantial without being a burden — the usual weight of a steel watch on a wrist this size. (1.2g per mm of wrist)
Xiaomi Watch S4
Case 47.3mm · Lug-to-lug 47.3mm · Thickness 12.0mm · 45g
Sweet Spot
47.3mm on a 55mm wrist
Across the wrist it works — 3.9mm spare each side — but wide enough that the edge of the case back lifts clear of the skin.
On a 55mm wrist the sweet spot is 47–53mm lug to lug. This one is 47.3mm.
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 wrist3.9mm spare each side
Fills the wrist without reaching the edge.
- Off the wrist12.0mm off the skin
Normal sports-watch height for a wrist this size. (12.0mm case, back against the skin)
- How it seats~6.3mm under the rim
Wide enough that the edge of the case back lifts clear of the skin.
- Weight on the wrist45g
Light enough to forget you have it on. (0.8g per mm of wrist)
2D Dimension Schematics
Every case drawn to scale on a shared centre — from above, and in profile against the wrist.
- Huawei Watch 4 Pro47.6mm · 12.9mm thick
- Xiaomi Watch S447.3mm · 12mm thick
3D preview
Huawei Watch 4 Pro vs Xiaomi Watch S4 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 Xiaomi Watch S4 lasts 3.3× as long as the Huawei Watch 4 Pro (15 days against 4.5 days).
Huawei Watch 4 ProXiaomi Watch S4
Battery Saver
504 hours—Smartwatch
4.5 days15 days
Specifications
The short version
10 key specs| Spec | HuaweiWatch 4 Pro | XiaomiWatch S4 |
|---|---|---|
| Case Width | 47.6mm | 47.3mm |
| Thickness | 12.9mm | 12mm |
| Weight | 65g | 44.5g |
| Shape | Circular | Circular |
| Water Resistance | 5 ATM | 5 ATM |
| GPS | Yes | Yes |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Screen size | 1.5 inches | 1.43 inches |
| Battery life | 4.5 days | 15 days |
| Released | 2023 | 2024 |
Every specification
116 specs| Spec | Huawei Watch 4 Pro | Xiaomi Watch S4 |
|---|---|---|
| Design | ||
| width | 47.6 | 47.3 |
| height | 47.6 | 47.3 |
| volume | 29.23 cm³ | 26.85 cm³ |
| weight | 65 g | 44.5 g |
| thickness | 12.9 | 12 |
| ATM rating | 5 ATM | 5 ATM |
| resolution | 466 x 466 px | 466 x 466 px |
| screen size | 1.5 inches | 1.43 inches |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Has a display | Yes | Yes |
| pixel density | 310 ppi | 326 ppi |
| water resistance | Waterproof | Waterproof |
| Always-On Display | Yes | Yes |
| has a touch screen | Yes | Yes |
| is designed for kids | No | No |
| waterproof depth rating | 30 m | 50 m |
| Watch band is replaceable | Yes | Yes |
| Has sapphire glass display | Yes | Yes |
| Ingress Protection (IP) rating | IP68 | — |
| has branded damage-resistant glass | No | No |
| Battery | ||
| battery life | 4.5 days | 15 days |
| battery power | 780 mAh | 486 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 |
| battery life in power save mode | 504 hours | — |
| Sensors | ||
| has GPS | Yes | Yes |
| has a compass | Yes | Yes |
| Has a barometer | Yes | Yes |
| has a gyroscope | Yes | Yes |
| 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 | Yes | Yes |
| Monitors blood oxygenation levels | Yes | Yes |
| Features | ||
| RAM | 2GB | — |
| release date | 2023-06-22 | 2024-10-29 |
| Has a stopwatch | Yes | Yes |
| Has smart alarm | No | No |
| Has call control | Yes | Yes |
| Has silent alarm | Yes | Yes |
| internal storage | 32GB | 32GB |
| Has notifications | Yes | Yes |
| Has ECG technology | Yes | No |
| Locates your phone | Yes | Yes |
| has voice commands | No | Yes |
| Acquires GPS faster | No | Yes |
| Has vibrating alerts | Yes | Yes |
| number of microphones | 1 | 2 |
| Can be used to answer calls | Yes | Yes |
| measures resting heart rate | Yes | Yes |
| has fast/slow heart rate notifications | Yes | Yes |
| Has a built-in camera remote control function | No | Yes |
| warranty period | — | 1 years |
| has HRV tracking | — | Yes |
| measures VO2 max | — | Yes |
| has a front camera | — | No |
| has fall detection | — | Yes |
| shows readiness level | — | Yes |
| has irregular heart rate warnings | — | No |
| Connectivity | ||
| has NFC | Yes | Yes |
| SIM cards | 1 eSIM | 1 eSIM |
| Wi-Fi version | Wi-Fi 4 (802.11n) | — |
| supports Wi-Fi | Yes | No |
| supports Galileo | Yes | Yes |
| Bluetooth version | 5.2 | 5.3 |
| has a cellular module | Yes | Yes |
| Is compatible with iOS | Yes | Yes |
| Is compatible with Android | Yes | Yes |
| supports ANT+ | — | No |
| Miscellaneous | ||
| Has passcode | Yes | Yes |
| Has auto pause | Yes | — |
| Is compatible with Windows | Yes | No |
| Is compatible with Mac OS X | 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 | — |
| has an external memory slot | — | No |
| 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 | Yes | — |
| Tracks your sleep | Yes | Yes |
| Tracks steps taken | Yes | Yes |
| Designed for diving | Yes | No |
| Has a route tracker | Yes | Yes |
| Has exercise tagging | Yes | Yes |
| 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
Huawei Watch 4 Pro
Sits best on wrists ~50–68mm wide (≈ 13.4–18.2cm circumference).
Xiaomi Watch S4
Sits best on wrists ~50–68mm wide (≈ 13.4–18.2cm circumference).
Frequently Asked Questions
Is the Huawei Watch 4 Pro bigger than the Xiaomi Watch S4?
The Huawei Watch 4 Pro is bigger — 47.6mm vs 47.3mm case width.
Which fits a smaller wrist better, the Huawei Watch 4 Pro or the Xiaomi Watch S4?
The Huawei Watch 4 Pro suits wrists around 50–68mm wide, and the Xiaomi Watch S4 around 50–68mm. The one with the smaller lower bound is the safer pick for a small wrist.
Can I see the Huawei Watch 4 Pro and Xiaomi Watch S4 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.