Enjoy hours of peaceful music listening using Sony's MDR-NC40 headphones. These noise-canceling headphones block out up to 80% of ambient noise, so you can hear details in your music at lower volumes and save your ears the stress. The lightweight headband and urethane-cushioned earpads reduce the pressure on your head, allowing you to listen comfortably for extended periods of time.
The compact design makes these headphones easy to travel with, and the included twin-plug airline adapter lets you turn an otherwise noisy flight into an hour or more of relaxation. The high-quality 30mm drivers with neodymium magnets faithfully reproduce your music, whether you turn the noise-canceling circuitry on or off. One "AAA" battery (not included) gives you up to 40 hours of active noise cancellation.
compact, folding, on-the-ear design
urethane-cushioned earcups and adjustable headband
on/off switch for passive (standard) or active (noise-canceling) operation
impedance: 68 ohms
up to 14 dB reduction of ambient noise
frequency response 14-22,000 Hz
in-line battery case with belt clip
4.9-foot cord with L-shaped stereo mini plug
up to 40 hours battery life
includes Owner's Manual, carrying case, and twin-plug airline adapter
weight 2.9 oz. (not including cable and battery pack)
warranty from Sony: 1 years parts, 90 days labor
Refurbished by Sony and shipped in Sony-sealed box with Owner's Manual, Sony accessories, and New Sony Warranty. You can view the owner's manual and warranty at:
