The X4 wireless headphones let you enjoy a great portability experience, streaming powerful sound with no strings attached for up to 18 hours of pure pleasure. You can listen music wirelessly, anywhere at any time, sharing easily via BT. With a superior comfort and lightweight, your X4 headphones are easy to adjust, perfectly fitting your head for total movement freedom. With their discreet and stylish design and the possibility of answer or make calls, the X4 headphones are a great choice to listen to music anywhere, including at your workplace.