Description : Designed with a 1 . 4inch bright screen that provides incredible color depth and exceptional clarity . Built - in 170mAh battery , Long standby time and working time . change , real - time grasp ; Optical sensor , real - time monitoring of during exercise , Protect your heart health . Main Function : Steps , , blood pressure , blood oxygen saturation , exercise data recording , dial selection , message push , daily alarm clock , photo control , weather information , etc . Lightweight and Comfortable Only about 46g in weight . Specification : Screen : 1 . 4 & quot ; display Pane : Super strength tempered glass Waterproof Level : IPX7 Chip : NRF52832 ( NORDIC ) Sensor : Bosch BMA421 Sensor ; HRS3300 Sensor Bluetooth : BT4 . 0 Battery : 170mAh polymer lithium battery Charging Method Charging clip Color : Black , Gray , Gold , Blue , Pink APP : Da Fit Support System : Android 4 . 4 or above / I0S9 . 0 or above Waterproof Level : IP67 Charging time : about 2 . 5 hours Life time : 5 - 7 days of use , 25 days of standby Package Includes : 1 Piece Smart Watch 1 Piece Charging Clip 1 Piece User Manual Note : Color might be slightly different due to the color calibration of each individual monitor . Please allow slightly measuring deviation due to manual measurement .