Description
Xiaomi Watch S4 at a glance
The Watch S4 pairs a bright round AMOLED display with Surge OS 2, fast top-up charging, and dual-band satellite tracking for everyday wear and structured training.
Display and design
The 1.43-inch AMOLED panel supports dynamic watch faces and a custom always-off style dial. Resolution is 466 × 466 at 326 PPI, with a 60 Hz refresh rate. Typical brightness reaches 1500 nits, peaking at 2200 nits for outdoor readability.
The case measures 47 mm × 47 mm × 12 mm and weighs 44 g without the strap. A rotating crown simplifies navigation through menus and workouts.
Power and durability
A 486 mAh lithium-ion polymer battery backs day-to-day use. A 5-minute charge can deliver nearly two days of battery life. Charging uses a 2-pin magnetic dock. The watch is rated 5ATM for water resistance.
Software and connectivity
Xiaomi Surge OS 2 runs the experience. Pair via Bluetooth 5.2 with phones on Android 8.0 or newer, or iOS 12.0 and above.
Fitness and sensors
Choose from more than 150 sports modes. Onboard sensors include heart rate with blood oxygen, accelerometer, gyroscope, electronic compass, barometer, ambient light, and Hall sensor.
Location uses dual-frequency GNSS with support for BeiDou, GPS, GLONASS, Galileo, and QZSS.
Specifications
| Display | 1.43″ AMOLED; dynamic faces; custom screen-off dial |
| Resolution | 466 × 466, 326 PPI |
| Brightness | 1500 nits (global); 2200 nits (peak) |
| Refresh rate | 60 Hz |
| Dimensions | 47 mm × 47 mm × 12 mm |
| Weight | 44 g (without strap) |
| Battery | 486 mAh; Li-ion polymer |
| Fast charge | 5 min ≈ nearly 2 days runtime |
| Water rating | 5ATM |
| Charging | 2-pin magnetic dock |
| OS | Xiaomi Surge OS 2 |
| Wireless | Bluetooth 5.2 |
| Compatibility | Android 8.0+; iOS 12.0+ |
Full spec and variant details for the Xiaomi Watch S4 are listed on xiaomipakistan.com.
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