The Skullcandy Crusher Headphones have so many great features packed in its hard to know where to start. The custom-tuned REX40™ driver is the keystone of Supreme Sound. It is designed from the ground up by Skullcandy’s world-class audio engineering team and delivers an extremely smooth frequency response with minimal distortion. It also sports The Sensation55™ bass extension driver. Through this driver, the Crusher delivers a powerful and realistic bass experience that transforms your audio into bass you can feel. These two features help deliver sound like you've never heard from your headphones, but it also has all the features you would expect, In-line Mic1 remote delivers the ultimate clarity and functionality with most devices, a detachable cable and Crusher features a foldable hinge design that breaks down to 40 percent its size.