Specification: Model Number:    P1 Material:    PC, Silicone band Color:    Green, Blue, Grey, Orange, Red, Black Display:    0.86" OLED Wirless Type:    Bluetooth 4.0 Battery Capacity:    90mAh Sensor:    3D acceleration sensor KXTJ1-1009 Photoelectric Sensor:    Everlight Normal Use:      About 3-5 days Standby Time:     About 10 days Waterproof Level:    IP67(It is not recommended to wear this product when taking a hot bath) Work Temperature:     -10-50 Support OS:     Android 4.3 or above, IOS 8.0 or above Product Size:     270 x 17 x 11mm Product Weight:    About 25g