The Skullcandy Crusher provides the convenience of Bluetooth technology, with the sound quality of an over-ear headphone. With Stereo Haptic Bass and Custom-tuned audio drivers, the Crusher produces rich acoustics, with sound you can feel. Built-in controls handle functions such as taking calls, managing music and adjusting volume; all of these functions are easily accessible with the remote and microphone built right into the ear cup. For complete bass control, the headphones also have an adjustable slider on the ear cup.Along with the Crusher's high quality tech features, its design is intuitive and sleek. Foldable hinges make for a compact package when the headphones are not in use. A Travel Bag fits the headphones and all accessories for easy storage and transport.Finally, these headphones have a long battery life providing up to 40 hours of Bluetooth listening, meaning less time messing with those pesky cords. These headphones take advantage of all the latest technology providing a superior audio experience.