Color (Midnight Black, Glacier Silver, Mystic Rose) Display Size and Type (1.72-inch AMOLED Touch Display) Display Resolution (212 x 520 pixels) Screen Brightness(HBM 1500 nits with auto brightness adjustment) Sensors(Accelerometer, Gyroscope, Electronic compass, Optical heart rate and pulse oximeter, Ambient light sensor) Water Resistance (5ATM) Data Connection (Bluetooth® 5.4) Haptic Motor(Linear motor) Battery Capacity (Li-Po battery, 233mAh) Charging (type: Magnetic – Time: Approx. 90min) Operating System (Android 8.0 or iOS 14.0 and above) Compatible Apps(Mi Fitness app)