Design
Mi Smart Band 4
Specifications
Weight22.1g
Water Resistance Rating5 ATM
Display TypeAMOLED
Screen Size0.95"
Resolution120 x 240 RGB
Colour Depth24bit
Screen BrightnessUp to 400 nits (max brightness), brightness adjustable
Touchscreen typeOn-cell capacitive touchscreen
Screen protection2.5D tempered glass with anti-fingerprint coating
ButtonSingle touch button (wake up, go back)
Wrist strap typeRemovable wrist strap
(Mi Smart Band 4 is compatible with Mi Band 3 straps)
Wristband width18mm
Wrist strap materialThermoplastic polyurethane
Adjustable wrist strap length155-216mm
RAM512KB
ROM16MB
Sensors3-axis accelerometer + 3-axis gyroscope;
PPG heart rate sensor;
Capacitive proximity sensor
Wireless connectivityBT5.0 BLE
BatteryLiPo, 135mAh
Charging Type2Pin Pogo Pin
Charging time≤ 2 hours
Standby timeUp to 20 days
Motor TypeRotor
Body materialPolycarbonate
AppMi Fit
System requirementsAndroid 4.4, iOS 9.0 or above
Features
Sport Functions6 workout modes: Treadmill, exercise, outdoor running,
cycling, walking, pool swimming; Count steps, distance,
and calories burned
Health monitoringWorkout completion notifications, goal setting, sleep monitoring,
heart rate monitoring, all-day heart rate checking, resting
heart rate, heart rate chart, idle alerts
Other featuresAlarm, 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 X 1
Wrist strap X 1
Specialised charging cable X 1
User guide X1
