Xiaomi Watch S4

Display Panel:

1.43-inch AMOLED Touchscreen Display (466 x 466 Pixels, 326 PPI)

Display Features:

60Hz Fluid Refresh Rate | 1500 nits High Brightness Mode (HBM) Peak

Chassis Build:

Premium Aluminum Alloy Frame | Weight: ~44.5 g (Without Strap)

Strap & Color Variants:

Black (Fluororubber) | Silver (Fluororubber) | Rainbow (Fluororubber + Nylon)

Biometrics & Tracking:

Heart Rate Sensor | Blood Oxygen (SpO2) Sensor | Accelerometer | Gyroscope | Ambient Light Sensor | Electronic Compass | Barometer Sensor | Hall Sensor

Satellite Navigation:

Built-In Multi-System GNSS (GPS | Galileo | Glonass | BeiDou | QZSS)

Battery & Charging:

486mAh Capacity | Up to 15 Days Typical Usage | 2-Pin Magnetic Charging Dock

Audio Architecture:

Integrated Loudspeaker | 2-Microphone Array System

Smart Connectivity:

Bluetooth® 5.3 Calling Support | Multi-Region NFC Hardware Integration

Waterproof Rating:

5ATM Water Resistant Architecture (Submersible up to 50 Meters)

Operating System & Sync:

Xiaomi HyperOS 2 | Android 8.0 or iOS 14.0 and Above Compatibility

Chassis Dimensions:

47.3 x 47.3 x 12.0 mm (Excluding Strap & Protrusions)