Model Name: Redmi Watch 2 Lite Display: 1.55 inch square & thin film transistor (TFT) screen Resolution: 320x360 Sensors: Optical heart rate sensor, accelerometer, gyroscope, electronic compass GPS GLONASS Galileo BeiDou Battery: 262 mAh Charging port: Magnetic charging Battery life: 10 days under typical usage mode 5 days under heavy usage mode Waterproof level: 5 ATM Wireless connection: Bluetooth 5.0 (Bluetooth Low Energy) Supported systems: Android 6.0 or later iOS 10.0 or later 100plus Fitness Modes Multi system standalone GPS Blood Oxygen Measurement