If you want to listen without compromises and limitlessly, the KAORKA wireless TV headphones with UHF transmission are the thing for you. They offer a wide and regular transmission from the deep to very high tones. With these headphones, you can listen to music or watch movies without disturbing your environment or being disturbed by sounds. Features: charging base. Very comfortable velvet cushion. Volume control on the headphones. Operating time: 20 hours. Technical data: 3 channels 863.5 MHz to 864.5 MHz. Range 70 m in open field. Power supply charging socket: 8. V 2A voltage amplification voltage. Headphone supply: 2 x AAA - 1.2 V (included)