Basic parameters
Product model: Standard version: M2239B1
NFC version: M2240B1
Main body net weight: about 27g, including wristband
Main body size: 48*22.5*10.99 mm
Screen size and type: 1.62-inch AMOLED screen
Screen resolution: 192*490
Screen brightness: up to 600nit, supports automatic brightness adjustment.
Cover material: 2.5D tempered glass cover
Casing material: PC
Sensor: optical heart rate blood oxygen sensor, six-axis motion sensor
Waterproof level: 5ATM
Wireless connection: BluetoothTM BLE 5.1
Vibration motor: rotor motor
Battery capacity: 190mAh
Battery type: lithium-ion polymer battery
Charging time: supports fast charging, charging time is about 1 hour
Adjustable wristband length: 135-210mm
Wristband material: TPU
System language: Simplified Chinese, Traditional Chinese, English
Supported system: Android 6.0 or iOS 12.0 and above
Supported APP: Xiaomi Sports Health
