Solid metal housing. Precision-machined single-billet metal housing prevents vibrations and unwelcome sound from tainting your listening experience. Grid-iron tough. Whether you keep urBeats pristine or throw them in and out of your bag, you dont have to worry about them breaking or fraying anytime soon. In-line mic for calls. Switch easily between music and incoming calls. No need to take off your headphones or talk into the phone like a walkie-talkie. Built-in mic for calls. Switch easily between songs and incoming calls. No need to take off your headphones or talk into the phone like a walkie-talkie.