Breakthrough DesignThanks to its advanced 3-button mic and remote system which Klipsch designed in conjunction with Apple the Image S4i is the first third-party headset to offer full control of your iPhone, iPod touch and iPod music and video content.Unlike other headsets the S4i positions its mic and remote at the cable yoke to create a more natural feel when answering calls and controlling music. The mic is a highly intelligible 360 design with echo cancellation so you'll be heard crystal clear and won't have to worry about the external noise around you.