Xiaomi
Watch 5 vs Watch S3
Size, specs & wrist fit compared
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Which one fits you
Both need much the same wrist — roughly 49–67mm across the flat of the wrist. Neither will fit where the other won't, so decide on thickness, weight and features instead.
The Watch 5 and Watch S3 share a near-identical 47mm case, so wrist presence comes down to thickness, lug-to-lug and weight.
On the wrist the Watch S3 feels lighter (44g vs 56g, case only).
The Watch 5 is middle-of-the-pack for thickness among the 91 47mm watches in the database.
Among the 91 47mm watches we hold thickness for, the Watch S3 is thinner than 74%, so it wears flatter than its width suggests.
The Watch 5 is 0.3mm thicker and 12g heavier than the Watch S3. Both are circular.
Watch 5
Watch S3
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Xiaomi
Watch 5
Xiaomi
Watch S3
2D Dimension Schematics
Every case drawn to scale on a shared centre — from above, and in profile against the wrist.
- Xiaomi Watch 547mm · 12.3mm thick
- Xiaomi Watch S347mm · 12mm thick
3D preview
Watch 5 vs Watch S3 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 S3 lasts 2.5× as long as the 5 (15 days against 6 days).
5S3
Battery Saver
432 hours—Smartwatch
6 days15 daysTraining
—3 hoursGPS
—3 hours
Specifications
The short version
10 key specs| Spec | XiaomiWatch 5 | XiaomiWatch S3 |
|---|---|---|
| Case Width | 47mm | 47mm |
| Thickness | 12.3mm | 12mm |
| Weight | 56g | 44g |
| Shape | Circular | Circular |
| Water Resistance | 5 ATM | 5 ATM |
| GPS | Yes | Yes |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Screen size | 1.54 inches | 1.43 inches |
| Battery life | 6 days | 15 days |
| Released | 2025 | 2023 |
Every specification
116 specs| Spec | Xiaomi Watch 5 | Xiaomi Watch S3 |
|---|---|---|
| Design | ||
| width | 47 | 47 |
| height | 47 | 47 |
| volume | 27.17 cm³ | 26.51 cm³ |
| weight | 56 g | 44 g |
| thickness | 12.3 | 12 |
| ATM rating | 5 ATM | 5 ATM |
| resolution | 480 x 480 px | 466 x 466 px |
| screen size | 1.54 inches | 1.43 inches |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Has a display | Yes | Yes |
| pixel density | 312 ppi | 326 ppi |
| water resistance | Waterproof | Waterproof |
| Always-On Display | Yes | Yes |
| has a touch screen | Yes | Yes |
| is designed for kids | No | No |
| Watch band is replaceable | Yes | Yes |
| Has sapphire glass display | Yes | No |
| has branded damage-resistant glass | No | No |
| waterproof depth rating | — | 50 m |
| maximum operating temperature | — | 45 °C |
| lowest potential operating temperature | — | -10 °C |
| Battery | ||
| battery life | 6 days | 15 days |
| battery power | 930 mAh | 486 mAh |
| has wireless charging | Yes | No |
| 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 | 432 hours | — |
| charge time | — | 0.83 hours |
| battery life with GPS on | — | 3 hours |
| battery life in training mode | — | 3 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 | No | No |
| Monitors blood oxygenation levels | Yes | Yes |
| Features | ||
| RAM | 2GB | 32MB |
| release date | 2025-12-26 | 2023-10-26 |
| 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 | — |
| internal storage | 32GB | 4GB |
| measures VO2 max | Yes | Yes |
| Has notifications | Yes | Yes |
| Has ECG technology | No | No |
| Locates your phone | Yes | Yes |
| has a front camera | No | — |
| has fall detection | No | Yes |
| has voice commands | Yes | Yes |
| Acquires GPS faster | Yes | Yes |
| 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 | Yes |
| has irregular heart rate warnings | No | No |
| has fast/slow heart rate notifications | Yes | Yes |
| Has a built-in camera remote control function | Yes | Yes |
| Connectivity | ||
| has NFC | Yes | Yes |
| Wi-Fi version | Wi-Fi 4 (802.11n) | — |
| supports ANT+ | No | No |
| supports Wi-Fi | Yes | No |
| supports Galileo | Yes | Yes |
| Bluetooth version | 5.4 | 5.2 |
| has a cellular module | No | No |
| Is compatible with iOS | Yes | Yes |
| Is compatible with Android | Yes | Yes |
| Miscellaneous | ||
| Has passcode | No | No |
| Is compatible with Windows | No | No |
| Is compatible with Mac OS X | No | No |
| has an external memory slot | No | No |
| has a battery level indicator | Yes | Yes |
| has a socket for a 3.5 mm audio jack | No | Yes |
| Compatible with external heart rate monitors | Yes | Yes |
| App & Software | ||
| Free app | Yes | Yes |
| Has coaching | Yes | No |
| Includes maps | Yes | — |
| Supports routes | Yes | Yes |
| Has achievements | Yes | Yes |
| Has goal setting | 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 |
| Doesn’t require account | No | No |
| Provides activity reports | Yes | Yes |
| Displays fertile window notifications | Yes | Yes |
| Counts how many calories you've burned | Yes | Yes |
| number of exercises | — | 150 |
| Has temperature tracking | — | No |
| Activity tracking | ||
| Measures pace | Yes | Yes |
| Tracks distance | Yes | Yes |
| Tracks elevation | Yes | Yes |
| 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 | Yes | — |
| Tracks calorie intake | Yes | Yes |
| Provides sleep reports | Yes | Yes |
| Detects activities automatically | Yes | Yes |
| Has a stroke counter for swimming | Yes | No |
| Designed for golf | — | No |
Wrist Fit
Xiaomi Watch 5
Sits best on wrists ~49–67mm wide (≈ 13.1–17.9cm circumference).
Xiaomi Watch S3
Sits best on wrists ~49–67mm wide (≈ 13.1–17.9cm circumference).
Frequently Asked Questions
Is the Xiaomi Watch 5 bigger than the Xiaomi Watch S3?
Both have a 47mm case. Compare their thickness and lug-to-lug above to judge wrist presence.
Which fits a smaller wrist better, the Xiaomi Watch 5 or the Xiaomi Watch S3?
The Xiaomi Watch 5 suits wrists around 49–67mm wide, and the Xiaomi Watch S3 around 49–67mm. The one with the smaller lower bound is the safer pick for a small wrist.
Can I see the Xiaomi Watch 5 and Xiaomi Watch S3 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.