The Denon Urban Raver AH-C300 In-Ear Headphones provide unprecedented bass from a small form factor, thanks to Denon's patent-pending Double Air Compression Driver technology. Each earpiece features two 11mm drivers mounted in parallel to give a bone-jarring bass experience. Denon has also patented a special nozzle profile for extreme comfort for long listening periods. Denon's patent-pending mini control wheel allows for easy control of Apple iPod, iPhone and iPad, while an integrated microphone on the earpiece provides clear phone conversations without having to fumble for an in-line remote as on conventional in-ear headphones. Further enhance your listening experience by downloading the Denon Club app, available for Apple iPhone, Apple iPad and Android devices.