Finally…now one person can enjoy the television (at the volume they prefer) without disturbing others who are trying to read, sleep or study! It's perfect for individuals who are hard of hearing or for families where one member wants the TV louder than others do. The transmitter simply plugs into any TV or audio source (stereos and home theater systems, desktop and laptop computers and more), then it sends crystal-clear audio up to 33' to the headphones. Wireless headphones are comfortably padded for hours of listening pleasure. Uses two AAA rechargeable batteries (included). Includes RCA 3.5mm adapter. 3 1/2" l x 8" w x 8 1/2" h.