The Xiaomi Watch S4 (41mm) features a 1.32-inch AMOLED display, comprehensive health tracking (including skin temperature and SpO₂), 150+ sports modes with dual-frequency GPS, and safety features like an SOS button. It offers up to 8 days of battery life under light usage and has a premium stainless steel build with a rotating crown for navigation.
Display and design
- Display: 1.32-inch AMOLED display with 466×466 resolution, up to 1500 nits brightness, and adaptive brightness.
- Build: Premium stainless steel body.
- Navigation: Includes an upgraded rotating crown for smooth operation
Health and fitness tracking
- Health Monitoring: Tracks heart rate, SpO₂, sleep, stress levels, and skin temperature.
- Female Health: Includes skin temperature monitoring for enhanced menstrual cycle prediction.
- Sleep: Provides advanced sleep tracking and a sleep improvement plan.
- Sports Modes: Supports over 150 sports modes with auto-tracking and a “Sports Vlog” feature.
- GPS: Features dual-frequency L1+L5 GPS for precise outdoor activity tracking.
Safety and connectivity
- Safety: Includes an SOS button, loud alarm, and real-time location sharing with contacts.
- Fall Detection: Offers fall detection while skiing.
- Smart Controls: Can control other Xiaomi smart devices via Xiaomi Smart Hub.
- Calls: Supports Bluetooth calling.
Battery and charging
- Battery Life: Up to 8 days of light usage, or about 4 days with normal usage.
- Charging: Uses a magnetic charger.
Other features
- Operating System: Runs on Xiaomi HyperOS 3.0.
- Customization: Offers over 200 watch faces through the Mi Fitness app.
- Sensors: Includes an ambient light sensor, compass, barometer, and a new T1 chip for efficiency.
