These cordless stereo headphones enable you to privately enjoy studio-quality stereo sound throughout your home without being tethered to a cord that stretches to your stereo, television, or home computer. Unlike other headphones, they have a 150'-maximum range that automatically lock in and maintain the clearest connection to your favorite audio source, such as your stereo system, television, or home computer. Able to easily broadcast through walls and floors, the 900 MHz connection to the transmitting base eliminates static, crackling, and interference from other devices, while two discrete channels let you select the most optimal communication between the headphones and base (depending on your own surroundings). The high-output speakers built into the headphones provide full-dynamic range for rich, realistic bass and crisp, clear highs. The comfortable full-sized padded headphone design reduces intrusive noise from external sources. Two AAA batteries required, providing up to 12 hours of use. 7 1/2" H x 6 1/4" W x 3" D. (3/4 lb.)