Get a cinematic sound experience at home with wireless headphones that provide the experience of having seven speakers installed around your living room. Feel thunderous bass and atmospheric echoes with precision. The headphones feature large 40mm drivers and a wide dynamic frequency range so that nothing gets lost..Connectivity Technology: Wireless Battery life: Listen wireless for up to 20 hours (built-in battery life). Get the experience of 7 speakers, in a fraction of the size. Stylish charging dock that looks good on any bookshelf or side table. Digital wireless: Enjoy noiseless high-quality sound from non-compressed 2.4 GHz/rf digital transmission.