Emerson EM830 4-in-1 Handsfree Stereo Headset with Swivel Microphone (For PC, iPod, MP3 Players, Cellular and Cordless Phones)-Corded Head set Stereo handsfree convenience for PC, iPod and MP3 players, cellular phones, cordless phones Behind the neck design Take control of your conversation Mute button allows private conversation Control volume from the convenient belt clip controller