... can connect with PC,TV,DVD,CD,MP3,MP4 and other audio equipments. Specifications:This product is a wireless stereo ... of cavity makes your communication and listening more clear and vividUSB adapter can plug and play, no need any driver ... use it.Applied ergonomics design,wearing more beautiful,comfortable and convenientConnet with TV,iPhone etcMicrophone:Microphone size:6mmSensitivity:-52dbImpedance ...