Featuresr you must connect your phone with bluetoothr your personal partner of audio video 12 hours of continuous battery lifer cost effective for entry level audiophiles rotatable earmuffs stretchable headbandr free from noiser long battery life the 200mah polymer lithium batteryr low delay excellent wireless experiencer it has answer phone multipoint connecting movenextmoveprevious switch etc r the bluetooth headset support for receive calls and listening to music playing mu