The Koss iL200k KTC interlocking in-ear headphones feature a truly original design couples with a unique material to form the perfect harmony. These interlocking in-ear headphones utilize an ingenious patented design for easy on-the-go storage without sacrificing rich audio. Koss Touch Control (KTC) remote and microphone technology, made for iPhone, iPad and iPod, gives listeners more control in fewer steps. Listeners are now able to stay connected, shuffle songs and adjust volume with the flick of a switch.