Screen touch bracelet(0.96 inch OLED warm light screen does not hurt eyes). Heart rate test / blood pressure monitoring Find the mobile phone, anti-loss reminder(mobile phone out of range reminder) . Time display, step, heart rate real-time, distance screen display Standard exercise function(step, distance, calories). Sleep monitoring(sleep time, sleep quality) Fast charging, super long standby System requirements: Android 4.4 and above IOS 8.0 or above