Enjoy rich, detailed sound with enhanced bass response without inconvenient cables and cords. Bluetooth wireless capability lets you listen to audio from up to 30 feet away, while our padded headband and ear cushions make extended listening a pleasure. Internal rechargeable lithium-ion battery provides 8 - 10 hours of continuous music or talking. Built-in echo-cancelling mic allows you to have wireless phone calls and on ear touch control puts track control, play/pause, answer/end calls and volume control within easy reach. Includes USB charging cable.