Sony MDR-RF970RK RF Wireless Headphones

Move to the Groove With Sony's MDR-RF970RK Wireless Headphones. Listen to your favorite Audio source when the rest of the household needs peace and quiet -- while moving around your house freely. They can transmit up to 150 feet and works almost anywhere in the home - even outside in your backyard. The headphones offer crisp, clear transmission through the automatic Tuning and a noise reduction transmission system. Built-in NiCd Batteries charge automatically when you place them in the Charger -- you'll get up to 20 hours' listening time, anywhere in the house.

Operate on 900 MHz frequency

Effective range: Up to 150 feet

Frequency response: 20-20,000Hz

Driver unit: 30mm diameter, dome type

Audio inputs: Stereo L/R phono jacks

Automatic Tuning

Double band, self-adjusting headband

Battery life: Approx 20 hours with fully charged Ni-Cad battery (built-in)

Sensitivity: 105 dB/mW

Weight: Headphones: 8 3/8 oz (240g) w/battery

Transmitter: 6 2/3 oz (190g)