Sony RF400 Wireless Home Theater Headphones - Black WHRF400 Description: Condition: New Features:Enjoy high-quality audio with these adjustable Sony wireless headphones. The large drivers provide a range of 150 feet for comfortable listening, and the 20-hour battery life lets you catch up on a full season of shows in a day. Hear conversations clearly with the build-in Voice Mode of these Sony wireless headphones.Home Theater headphonesDesigned to use with your Home Theater to hear your favorite shows and movies with crystal clear audio.Recharge