Xiaomi
Redmi Watch 5 Active vs Watch S4 41mm
Size, specs & wrist fit compared
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Which one fits you
On wrists narrower than about 52mm, the Watch S4 41mm is the safer pick — it stays proportionate down to roughly 43mm, where the Redmi Watch 5 Active starts to hang over the edge. Above 52mm both sit cleanly, and the Redmi Watch 5 Active gives you more presence.
The Watch S4 41mm wears larger than the Redmi Watch 5 Active (41.2mm vs 40.4mm case), giving it more wrist presence — and needing a wider wrist to sit cleanly.
The Watch S4 41mm is the slimmer of the two (9.5mm vs 11.4mm), so it slides under a cuff more easily.
On the wrist the Watch S4 41mm feels lighter (32g vs 42.2g, case only).
Among the 508 40mm watches we hold thickness for, the Redmi Watch 5 Active is thicker than 74% — it will sit high even though the case width reads modest.
Among the 370 41mm watches we hold thickness for, the Watch S4 41mm is thinner than 98%, so it wears flatter than its width suggests.
The Watch S4 41mm is 0.8mm wider, 7.9mm shorter, 1.9mm thinner and 10.2g lighter than the Redmi Watch 5 Active.
Redmi Watch 5 Active
Watch S4 41mm
Switch or add watches
Xiaomi
Redmi Watch 5 Active
Xiaomi
Watch S4 41mm
2D Dimension Schematics
Every case drawn to scale on a shared centre — from above, and in profile against the wrist.
- Xiaomi Redmi Watch 5 Active40.4mm × 49.1mm · 11.4mm thick
- Xiaomi Watch S4 41mm41.2mm · 9.5mm thick
3D preview
Redmi Watch 5 Active vs 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 Redmi Watch 5 Active lasts 2.3× as long as the Watch S4 41mm (18 days against 8 days).
Redmi Watch 5 ActiveWatch S4 41mm
Smartwatch
18 days8 daysTraining
288 hours—
Specifications
The short version
11 key specs| Spec | XiaomiRedmi Watch 5 Active | XiaomiWatch S4 41mm |
|---|---|---|
| Case Width | 40.4mm | 41.2mm |
| Lug-to-Lug | 49.1mm | 41.2mm |
| Thickness | 11.4mm | 9.5mm |
| Weight | 42.2g | 32g |
| Shape | Rectangle | Circular |
| Water Resistance | 5 ATM | 5 ATM |
| GPS | No | Yes |
| Display type | LCD, IPS | OLED/AMOLED |
| Screen size | 2 inches | 1.32 inches |
| Battery life | 18 days | 8 days |
| Released | 2024 | 2025 |
Every specification
114 specs| Spec | Xiaomi Redmi Watch 5 Active | Xiaomi Watch S4 41mm |
|---|---|---|
| Design | ||
| width | 40.4 | 41.2 |
| height | 49.1 | 41.2 |
| volume | 22.61 cm³ | 16.13 cm³ |
| weight | 42.2 g | 32 g |
| thickness | 11.4 | 9.5 |
| ATM rating | 5 ATM | 5 ATM |
| resolution | 320 x 385 px | 466 x 466 px |
| screen size | 2 inches | 1.32 inches |
| Display type | LCD, IPS | OLED/AMOLED |
| Has a display | Yes | Yes |
| pixel density | 250 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 |
| maximum operating temperature | 45 °C | — |
| Ingress Protection (IP) rating | IPX8 | — |
| has branded damage-resistant glass | No | No |
| lowest potential operating temperature | -10 °C | — |
| Battery | ||
| charge time | 2 hours | — |
| battery life | 18 days | 8 days |
| battery power | 470 mAh | 320 mAh |
| has wireless charging | No | No |
| has a removable battery | No | No |
| Has a solar power battery | No | No |
| has a rechargeable battery | Yes | Yes |
| battery life in training mode | 288 hours | — |
| Sensors | ||
| has GPS | No | Yes |
| has a compass | No | 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 | 2024-08-27 | 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 |
| measures VO2 max | No | Yes |
| Has notifications | Yes | Yes |
| Has ECG technology | No | No |
| Locates your phone | Yes | Yes |
| has a front camera | Yes | No |
| has fall detection | No | Yes |
| has voice commands | Yes | Yes |
| Has vibrating alerts | Yes | Yes |
| Can be used to answer calls | Yes | Yes |
| measures resting heart rate | Yes | Yes |
| has irregular heart rate warnings | No | No |
| Has a built-in camera remote control function | Yes | Yes |
| has HRV tracking | — | Yes |
| internal storage | — | 32GB |
| Acquires GPS faster | — | Yes |
| number of microphones | — | 1 |
| shows readiness level | — | Yes |
| has fast/slow heart rate notifications | — | Yes |
| Connectivity | ||
| has NFC | No | Yes |
| supports Wi-Fi | No | No |
| supports Galileo | No | Yes |
| Bluetooth version | 5.3 | 5.4 |
| has a cellular module | No | Yes |
| Is compatible with iOS | Yes | Yes |
| Is compatible with Android | Yes | Yes |
| SIM cards | — | 1 eSIM |
| supports ANT+ | — | No |
| Miscellaneous | ||
| Has passcode | No | Yes |
| 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 | No |
| Compatible with external heart rate monitors | Yes | — |
| App & Software | ||
| Free app | Yes | Yes |
| Has coaching | Yes | No |
| Supports routes | Yes | No |
| 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 |
| Has temperature tracking | No | Yes |
| Doesn’t require account | No | No |
| Provides activity reports | Yes | Yes |
| Displays fertile window notifications | Yes | — |
| Counts how many calories you've burned | Yes | Yes |
| Ad-free | — | Yes |
| Includes maps | — | Yes |
| Activity tracking | ||
| Measures pace | Yes | Yes |
| Tracks distance | No | Yes |
| Tracks elevation | No | 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 |
| 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
Xiaomi Redmi Watch 5 Active
Sits best on wrists ~52–70mm wide (≈ 13.9–18.7cm circumference).
Xiaomi Watch S4 41mm
Sits best on wrists ~43–59mm wide (≈ 11.5–15.8cm circumference).
Frequently Asked Questions
Is the Xiaomi Redmi Watch 5 Active bigger than the Xiaomi Watch S4 41mm?
The Xiaomi Watch S4 41mm is bigger — 41.2mm vs 40.4mm case width.
Which fits a smaller wrist better, the Xiaomi Redmi Watch 5 Active or the Xiaomi Watch S4 41mm?
The Xiaomi Redmi Watch 5 Active suits wrists around 52–70mm 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 Xiaomi Redmi Watch 5 Active 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.