reminder 1. APP support system: Android 4.4 and above, IOS 9.0 and above 2. Do not use a charger higher than 5V/2A. 3. Data cannot be used for medical reference. 4. The watch cannot touch hot water, because the hot water will cause the watch display to fog. USB Quick Remove Direct Charge New charging mode of the bracelet, quick release detachable wrist strap design. Remove the strap and plug it directly into the USB charging port. (Note: please try the sides of the two chipsets) You can charge by plugging in the USB interface, saving the trouble of carrying the charging cable and charging stand. function *Pedometer *Heart rate measurement *Blood pressure monitoring *Sport mode *Thermal monitoring *Sleep monitoring *Twitter Message *WhatsApp Message