Want a bone-jarring, brutally powerful bass experience from an In-Ear headphone but didn't think it was possible? Think again. Denon's AH-C300 Urban Raver In-Ear feature Denon's patent-pending Double Air Compression Driver technology, which incorporates two 11mm drivers in each ear to provide powerful bass from a small form factor. Denon's patent pending control wheel and integrated microphone on the ear piece allows for easy control of Apple iPod, iPhone and iPad, and clarity of phone calls. Also Included: Carrying Case with Karabiner and ¼” Gold-plated adapter. Further enhance your listening experience by downloading the Denon Club app, available for Apple iPhone, Apple iPad, and Android smartphones.