iHip IP-KNOB-P DJ Style Adjustable Volume Control On Headphone with Mic, Pink Moveable Volume Knob On The Headphone To Raise Or Lower The Volume Output Level Built-In-Mic To seamlessly Receive Incoming Calls Without Having To Miss A Beat Compatible With Many Stereo Audio Devices Including iPhone, iPod and Other MP3 Players Professional Noise Isolating Headphone Large Drivers For Strong Response