Denon Music Maniac In-Ear Headphones (AH-C250) Single Balance Armature Drivers for high-performance sound Professionally tuned for acoustic transparency, zinc die-cast housing for durability and performance Silicon and double solid silicon ear tips for superior comfort, great fit and noise isolation Cable with integrated controls and microphone for on-the-the go use Denon Audio Smartphone Application available for iPhone, iPad, or Android phones, the world's first integrated application suite designed for the audiophile Connectivity technology : Wired