The band has finally been equipped with a 0.95-inch OLED color display, which looks much better than the matrix used in the predecessor. In addition, on board we will find a larger 135 mAh battery, support for six sport modes and the possibility of wider control of the smartphone (eg switching music), and all this hidden under a waterproof case up to 5 ATM
- Weight: 22.1g
- Water Resistance Rating: 5 ATM
- Display Type: AMOLED
- Screen Size: 0.95"
- Resolution: 120 x 240 RGB
- Colour Depth: 24bit
- 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: 512KB
- ROM: 16MB
- Sensors: 3-axis accelerometer + 3-axis gyroscope; PPG heart rate sensor; Capacitive proximity sensor
- Wireless connectivity: BT5.0 BLE
- Battery: LiPo, 135mAh
- Charging Type: 2Pin Pogo Pin
- Charging 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
- Mi Smart Band 4 lasts up to 20 days on a single charge according to Huami Laboratory testing
Sport Functions: 6 workout modes: Treadmill, exercise, outdoor running, cycling, walking, pool swimming; Count steps, distance, and calories burned
Health monitoring: Workout completion notifications, goal setting, sleep monitoring, heart rate monitoring, all-day heart rate checking, resting heart rate, heart rate chart, idle alerts
Other features: Alarm, proximity sensor, pre-set watch face, customizable watch face,
lock screen, timer, stopwatch, phone alarm and notifications, incoming
calls, message notifications, calendar notifications, app notifications,
weather forecast, Find my phone, phone unlock, event notification,
Night mode, Do not disturb mode (works even without phone), music
controls on band, Bluetooth broadcasting, battery level display, different ways to wear, OTA updates
Package contents: Mi Smart Band 4, Wrist strap, charging cable, user guide.
