VXI BlueParrott B100 Wireless Headset System for Corded/Cordless Phones and Bluetooth Cell Phones Bluetooth technology ensures crystal clear communication up to 75 feet from the base Move freely without the need for wires to pull or belt clips Headset controls include volume, on/off, call answer, call end, pairing, and mute 128-bit digital encryption provides air-tight security during wireless communication Up to 6 hours talk time, 100 hours on standby