Metal In Ear headphones with 10mm driver delivers oustanding music quality with precise bass . Built in remote allows easy access play/pause, skipping tracks and answering calls . Flat Tangle-free cable . Using the Microphone Control: One click: To answer or end a call. Press and release the center button once to answer. Repeat to end the call; Two clicks: To skip to the next song. Press and release the center button twice quickly to skip forward: Decline an incoming call: Press and hold the center button for two seconds, then release. There will be two beeps when you let go to indicate sucessful operation. Play or pause a song or video: Press and release the center button. Repeat to resume. Specifications: Frequency Response : 20hz - 20KHz , Impedance : 16ohms= +/- 15% , Driver Size : 10mm , Sensitivity : 95db +/- 3dB , Cable lenth :1.20m , Audio Jack : 3.5mm Gold Plated.