Combining triple-mics that cancel noise and wind, voice commands, and Smart Sensor technology, Voyager Legend understands how and when you want to talk. Voyager Legend even announces whos calling and lets you say Answer to take the call. With technology this advanced, Voyager Legend is the first truly intelligent Bluetooth headset. Smart sensor technology intuitively directs calls to your phone or headset, pauses music for incoming calls, and allows you to automatically answer by simlpy placing the headset on your eye. Multi microphones optimise your voice and minimise noise caused by wind, movement, and background sounds. Adjustable headband. Water-resistant. Li-Ion battery (included) .