• 900 MHz wireless stereo headphones with range of up to 300 feet
• Transmits through walls, floors, and ceilings, inside or outside
• 40 mm driver elements produce rich, satisfying sound with deep bass
• RF noise reduction system minimizes outside interference
• Swiveling, padded ear cups and adjustable headband; includes NiMH batteries

• Model number: AW771
• Connectivity: Wireless, RF
• Maximum transmit range: 300 feet
• Compatibility: Computers, personal audio, home audio
• Headphones form factor: Over-the-head
• Frequency response: 20 to 20000 Hz
• Noise canceling: Yes
• Sound mode: Stereo
• Power supply: 3 x AAA Ni-MH rechargeable batteries (not included)
• Connector type: 3.5-millimeter headphone mini plug
• Weight: 4 ounces
• Included: AW771 headphones, transmitter/charging base, AC power adapter, mini jack to stereo lead adapter, mini jack to 6.35-millimeter headphone adapter

Outfitted with a 900 MHz wireless transmitter, these Acoustic Research headphones broadcast a signal through walls, floors, and ceilings at distances of up to 300 feet, letting users wander far from the music source or TV without losing the audio. The phones are ideal for people who get up frequently while working in an office setting, along with listeners who just like to move freely while enjoying high-quality music. Listeners can even walk outdoors wearing the AW771 phones--no line of sight is required between the headphones and transmitter. Thankfully, the audio quality doesn't suffer from the wireless connection. In fact, it excels thanks to the 40 mm driver elements, which deliver rich, nuanced sound with deep bass highlights. The system also comes with an RF noise reduction system that minimizes noise and interference, so listeners won't be bothered by stray radio waves.

The AW771 includes a pair of dual swiveling ear cups, which adjust from side to side to fit almost any size of ear. The velvet padding also makes the cups comfortable to wear, as does the soft, self-adjusting headband. Should you own two 900 MHz devices, the AW771 transmitter offers a channel select switch that changes the frequency to accommodate both products. The phones also come with rechargeable NiMH batteries that power up when the ear cups are placed in the transmitting base.