Sennheiser RS120 926 MHz Wireless RF Headphones with Charging Cradle

SENNHEISER RS120 -- Now you can enjoy complete freedom of movement when listening to music or using your computer! This open, supra-aural wireless RF ( Radio Frequency ) headphone system delivers transparent, balanced sound with outstanding bass response. Transmitter can be wall mounted Very lightweight headphones, extremely comfortable to wear Frequency response - 22Hz - 19500Hz Rechargeable NiMH batteries included (size - AAA) 2 year warranty