With these Sennheiser RS 135 over the ear wireless headphones from RC Willey, you can listen to your favorite music from up to 300 feet away without cumbersome cables. The headphones come complete with an easy-to-use recharging system. After use, simply place the headphones onto their convenient transmitter base station and they will automatically recharge for the next use. It’s easy to set them up too! Just plug the transmitter in, and connect the audio cable to an analog output (RCA or headphone plug), its that simple. The transmitter also features a convenient automatic on/off circuit: when you activate your audio source, the transmitter powers on without switches or buttons. easy! Five minutes after you turn off your audio source, the transmitter shuts off to conserve power. In addition, the three-position channel selector allows you to choose an interference-free channel for clear reception- even through walls and ceilings. These headphones are compatible with set-top DVD & Blu-Ray players, DVR’s, satellite receivers, a/v receivers, laptops, mac/PC, MP3 players, LCD, Plasma and standard televisions that feature RCA outputs (red and white outputs) and/or 1/8" and 1/4" headphone sockets What’s in the box? HDR 135 headphone TR 135 transmitter (audio cable is attached) Transmitter power cable (in a small white box- its there, trust us) (2) AAA NiMH rechargeable batteries RCA to 1/8" audio adapter 1/8" to 1/4" audio adapter Instructions for use Wireless freedom and stereo sound with reception through walls and ceilings up to 328 feet Simple, built-in recharging Detailed, warm sound reproduction with strong bass response Product Features: Sennheiser RF Wireless TV Listening Headphones Open Air design for Hi-Fi audio reproduction Volume, on/off and tuning control located on the headphone Very lightweight headphones are comfortable to wear for long periods of time Charging stand also stores the headphones when not in use Transmitter can be wall-mounted Supports the use of multiple headphones receiving the RF signal from one transmitter Three selectable transmit channels for avoiding interference and/or using more than one transmitter in a room Connects to RCA jacks (red and white outputs), 1/8" and 1/4" headphone sockets Wireless Freedom - Up To 330 Ft Range Volume and Tuning Controls On Headphones Battery Life Up To 20 Hours