Xiaomi Watch S3 vs Xiaomi Watch S4
Which one should you buy?
Who leads where?
- ConnectivityXiaomi Watch S4
Wins are counted from the official values in the table below; the BUY / CONSIDER / WAIT call comes from each product's own decision box. We do not predict prices.
 XiaomiXiaomi Watch S3No reviews yet |  XiaomiXiaomi Watch S4No reviews yet | |
|---|---|---|
| Key Differences | ||
| Case Size | 47 mm | 47.3 mm |
| Battery Life | up to 360 hours | up to 360 hours |
| Water Resistance | 5 ATM | 5 ATM |
| Health Sensors and Features | ||
| Heart Rate Sensor | Yes | Yes |
| SpO2 Sensor | Yes | Yes |
| Display | ||
| Size | 1.43" | 1.43" |
| Panel | AMOLED | AMOLED |
| Resolution | 466x466 | 466x466 |
| Peak Brightness | — | 1500 nit |
| Kasa | ||
| Case Size | 47 mm | 47.3 mm |
| Case Thickness | 12 mm | 12 mm |
| Weight | — | 44.5 g |
| Case Material | — | Aluminium alloy |
| Positioning and GNSS | ||
| GNSS Receiver | Yes | Yes |
| GNSS Systems | GPS, GLONASS, Galileo, BeiDou, QZSS | GPS, GLONASS, Galileo, BeiDou, QZSS |
| Battery and Charging | ||
| The figure the maker states | up to 360 hours | up to 360 hours |
| What that figure measures | In typical use | In typical use |
| Capacity | 486 mAh | 486 mAh |
| Charging Type | — | Magnetic charging |
| Water and Dust Resistance | ||
| Water Resistance | 5 ATM | 5 ATM |
| Connectivity | ||
| Bluetooth | 5.2 | 5.3 |
| NFC | Yes | Yes |
| Speaker | — | Yes |
| Microphone | — | Yes |
| Software | ||
| Operating System | — | Xiaomi HyperOS 2 |
| Phone Compatibility | Android and iOS | Android and iOS |
Xiaomi Watch S4 leads on 2 of 2 compared specs.
This table is based on manufacturers official specifications. Winning on paper does not always mean a difference in everyday use.