introduction: Master chip reatek 8762 a three-axis sensor heart rate blood pressure \ chip Shake "mute / Shake Waterproof level IP67 Compatibility with Android 4.4 or higher, iOS 8.0 and higher Static characteristics and dynamic blood pressure, heart rate, temperature the main characteristics of calories, calories, distance, sleep monitoring, sports mode, call reminders, alarm reminder, stopwatch, weather, arm lift, social sharing (micro letter, QQ, Facebook, Twitter) Display screen size 0.66 inch (s) OLED screen type connection parameters Bluetooth 4.0BLE (low power) Other parameters Battery Type Lithium polymer battery Battery capacity 110 mAh Magnetic suction type charging method Charging takes about 2 hours Life time of 8 days, and in standby mode for 15 days data is stored for 7 days manipulating graphene full control touch screen, control applications exterior of the front shell material: Powder Metallurgy \ Back shell: ABS + PC \ Strap: Silicone product color Black color packing list: 1 * 1 * Smart Bracelet 1 * USB charging line 1 * User Manual 1 * packing box