Sony Premium Lightweight Noise Reduction Computer Stereo Hi-Fi Stereo Headset for TV and Hi-Fi Audio Listen to your favorite multimedia wirelessly up to 150 'away with Sony's wireless RF headset system The headphones feature a closed circumaural design powered by RF connectivity designed for better vocal and overall sound quality It has a volume control of the headphones of simple control and charges directly on the base as an added convenience Noise Cancellation Silent technology is designed to keep the wireless signal last interfering interferences of other devices electronic so you can enjoy your favorite movie soundtrack or game with clear sound Wireless The widest range from the Dock transmitter (up to 150 ft) allows you to move from a room to without losing an audio connection 40 mm driver UNITS brand new 40 mm diaphragm wide balanced and accurate sound reproduction for an exceptional sound experience Extended Comfort Designed for long-wear the padded and comfortable ear pads are perfect for nights spent relaxing on the sofa Long-life battery The headphones feature a built-in rechargeable battery that can e provide playback for up to 20-hours per charge Fast charge One 3 5-hour charge occurs a full charge of approximately 25 hours