... Volume+/Volume,On/Off,Play/Pause,Previous/Next easy and convenient to operateWireless connect with PC,TV,MP3,MP4, ... design of cavity make your communication and listening more clear and vividUSB adapter can be plug and played,no need any drivers ... 7V rechargeable Li-ion batteryApplied ergonomics design wearing beautiful,comfortable and convenient RF frequency: 2.4GHZ ISM Band Support system: windows ...