Motorola HS850 Bluetooth Headset - Black Mono Bluetooth headset for handsfree voice communication with unique body design that employs a folding microphone boom Unfold the boom microphone, place the headset over the ear and a link will be established automatically Multifunction call control button and volume buttons Measures less than 5 cm in diameter when folded and weighs just 20 grams Talk time of up to 8 hours and standby time of up to 200 hours