Water Resistance Rating: 5 ATM
- Display: AMOLED, 0.95"
- Resolution: 120 x 240 RGB, 24bit Colour Depth
- Screen Brightness: Up to 400 nits (max brightness), brightness adjustable
- Touchscreen type: On-cell capacitive touchscreen
- Screen protection: 2.5D tempered glass with anti-fingerprint coating
- Button: Single touch button (wake up, go back)
- Wrist strap type: Removable wrist strap (Mi Smart Band 4 is compatible with Mi Band 3 straps)
- Wristband width: 18mm
- Wrist strap material: Thermoplastic polyurethane
- Adjustable wrist strap length: 155-216mm
- RAM/ROM: 512KB/16MB
- Sensors: 3-axis accelerometer 3-axis gyroscope, PPG heart rate sensor Capacitive proximity sensor
- Wireless connectivity: BT5.0 BLE
- Battery: LiPo, 135mAh
- Charging: 2Pin Pogo Pin, time≤ 2 hours
- Standby time Up to 20 days
- Motor Type: Rotor
- Body material: Polycarbonate
- App: Mi Fit
- System requirements: Android 4.4, iOS 9.0 or above
