... Volume+,Volume-,Play/Pause,Last song,Next song,easy and convenient to operateWireless connect with PC, can listen the ... 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 ...