Jabra FreeSpeak BT250V Vibrating Bluetooth Headset - Black Bluetooth compliance: Bluetooth version 1.1 (or higher) specifications. Talk time: Up to 7h (Depends on pone model and husage). Stand-by time: Up to 200h. Vibrating call alert - Call transfer - Last number redial - Voice activated dialing. Weight (headset): 0.8oz. This item comes in bulk packageing with Charger