Product Description
XIAOMI WATCH S4
Display: 1.43″ AMOLED display | Always-On Display | Custom watch faces
Product Dimensions: 47mm × 47mm × 12mm
Product Weight: 44g (without strap)
Resolution: 466 × 466 pixels | 326 PPI
Brightness: 1500 nits Global Brightness | 2200 nits Peak Brightness
Refresh Rate: 60Hz
Battery Capacity: 486mAh | Lithium-ion polymer battery
Battery Life: Up to 15 days (typical usage)
Fast Charging: 5-minute charge provides up to 2 days of use
Water Resistance Rating: 5ATM (up to 50 meters)
Charging Method: 2-Pin magnetic charging dock
Operating System: Xiaomi Surge OS 2
Compatibility: Android 8.0+ | iOS 12.0+
Wireless Connectivity: Bluetooth® 5.2
Health Monitoring: Heart rate | SpO₂ | Sleep tracking | Stress monitoring
Sports Modes: 150+ fitness & sports modes
Sensors: Accelerometer | Gyroscope | Ambient light sensor