Beats Solo HD headphones feature:- CLEARER SOUND. DEEPER BASS.Beats Solo HD headphones are the only Beats by Dr. Dre that come with not one, but two speakers inside each can. That means you get crystal clear highs and deep, rumbling lows in high definition.- ALMOST IMPOSSIBLE TO BREAK.Every pair is now constructed of super-durable, flexible material, reinforced with a metal strip to make sure it never comes apart. They look good, too - every pair of Beats Solo HD headphones feature the same high-quality clear-coat finish you find on a luxury sedan.- 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.