WATERPROOF, SHOWROOM BOX, ONLY BLACK BELT ??? *Bluetooth 4.0 + 5.0 LE* ( Dual Connectivity ) ??? *Optical Heart Rate Sensor* With Dynamic Heart Rate Real Time Monitor ??? Different *Sports Activities* To Calculate *Heart Rate / Calorie Count* ??? *BT Calling* / Message / WhatsApp / WeChat Notification ??? Metallic Aluminum Body ??? *Battery Backup Standby Time Upto 1 - 2 Days** ??? *Charging Time Upto 2 to 3 Hours* ???? Wireless Pinned Charger Holder New Technology