Description_x000D_115 PLUS smart bracelet function description:_x000D_Function Band Screen Bracelet 0.96 inch TFT_x000D_Heart rate detection_x000D_Time display, step count, calorie, distance display with screen_x000D_Standard sports function step, distance, calories_x000D_Sleep monitoring sleep time, sleep quality_x000D_Incoming call notification, message push_x000D_Anti-lost alert mobile phone out of range alert_x000D_Specifications_x000D_Mobile phone system requirements: Android 4.4 and above, IOS 8.0 above, Bluetooth 4.0_x000D_Bluetooth version: Bluetooth 4.0_x000D_Bluetooth chip: Mcube ST17H25_x000D_Heart rate module: HRS3300_x000D_Screen display: 0.96 inchTFT_x000D_Battery Capacity: 110mAh_x000D_Standby time: 15 days or so_x000D_Working hours: 5-7 days_x000D_Keys: Touch keys_x000D_Motor: Built-in, vibration alert_x000D_Charging interface: USB line_x000D_Waterproof rating: IPX7_x000D_Sensor: Gravity Sensor_x000D_size20CM_x000D_