The ECKO STOMP Series Stereo Ear buds with in-line microphone offer a high intensity listening experience with crisp, clear sound and deep bass. Features include a built-in mic and control switch compatible with iPhone, Android, Blackberry and any other phone with a 3.5mm jack. Included are 3 sizes of soft silicone ear buds. The ECKO STOMP offers premium sound quality, compact size, and sleek design.