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.