Cord-free Hellas stay in place and out of the way whether you’re running laps or doing an upside-down crunch. Keep it going all day with up to 14 hours of wireless playtime per charge. Features a built-in swipe interface, flexible 3D Hinge, collapsible structure, and built-in mic. Time to clean up? Simply detach the headband and ear cushions and toss them in with the wash.