Modeled after the acclaimed new Apple iPod Earphones, the iPhone Stereo Headset provide superior comfort, fit, and sound quality. The Stereo Headset also features a high performance microphone fitted with a windscreen for added clarity that is positioned inline on the cabling for the right earphone. The microphone capsule also serves as a Send/End button, for answering and ending of iPhone calls, and it even controls basic music playback. Mic & Remote Control Function just works with iPhone, iPhone 3G, iPhone 3GS, iPod Touch, iPod Touch 2nd Generation, iPod Nano IV & iPod Shuffle III. For other iPods, the mic and remote control function does not work. But the earphone function works well. There is a click unit on the headset. It is the remote control. And the mic is the hole on the click unit. Compatible With Iphone iPhone 4 iPhone 3GS iPhone 3G iPhone 4 (CDMA) iPhone