Plantronics M50/85550-01 Bluetooth Headset. Going hands free is easy with this reliable universally compatible over-the-ear Bluetooth enabled wireless telephone headset. It features separate buttons for volume, power-on/off, and call answer/end. Ergonomic earloop provides a comfortable, stable fit. Careful microphone placement with digital signal processing reduces noise, wind and echo. Lightweight headset with contoured eartip offers easy set-up with, and works up to 33 feet from, any Bluetooth phone. Included li-ion polymer rechargeable battery provides up to five hours talk time, up to one week standby time per charge. Battery fully recharges in just two hours.