Sony MDR-RF912RK Wireless RF Headphone System

SONY Wireless RF Headphones: Listen to your favorite media wirelessly from up to 150' away with the Sony Wireless RF Headphone System. This system includes a pair of wireless headphones and an RF transmitter. The transmitter connects to compatible A/V components using the device's headphone jack (or using the L/R jacks and a separately available plug adapter). Once connected, the transmitter broadcasts the audio signal to the headphones, allowing you to enjoy a wireless audio experience. Volume controls are located on the headphones, so you can adjust the sound to your liking. The transmitter is powered using the included AC adapter. The headphones can be powered using the included rechargeable battery or two AAA batteries (sold separately). The included rechargeable battery yields 13 hours of life from 7 hours of charging.