Feel the bass in your bones with Crusher Evo ~ the latest advancement in the famous Skullcandy Crusher line. Patented Adjustable Sensory Bass technology is an experience that you can~t get in any other headphones. And now, you can even customize the sound to your unique hearing through a quick audio test in the Skullcandy App. So you~ll hear the music exactly the way it was meant to be heard. Critical controls ~ call, track change, volume, and Crusher Bass ~ are conveniently located with easy-to-use tactile buttons. Tile finding technology lets you ~ring~ your headphones if they~re ever lost or misplaced, so you~ll never return home without them. Rapid Charge capability provides 4 hours of listening time on just 10 minutes of charge, and a full charge lets you feel the music for an amazing 40 hours. Crusher Evo is also travel-ready. It folds flat to fit perfectly into the included travel case.