Sony MDR-NC22 Noise Canceling Headphones

Listen to your music, not the plane, train or noise around the office.

No matter where you go, enjoy peace and quiet with the MDR-NC22 noise canceling headphones. These compact and comfortable bud-style headphones can reduce noise by 75% (12dB at 200 Hz), and the 13.5mm driver units produce powerful sound. Perfect for tuning out noise at work, traveling, or even when you are trying to sleep in a loud environment. The noise canceling circuit actually senses outside noise with built-in microphones and sends an equal-but-opposite canceling signal to the headphones. Additional features include an in-flight adapter, compact battery box and it even comes with a carrying pouch.
Noise reduction

Reduces noise by 75% (12db at 300Hz) when noise canceling circuit is switched on
13.5mm driver units

The drivers sit just outside the ear with the tip of the earbud small enough to fit into the ear canal for additional comfort, secure fit and sound blockage.
Ideal for work

Helps you shut off outside noise and concentrate on the job better
Ideal for quiet environment

Ideal for getting quiet environment to rest in noisy places, including dormitories, hotel rooms and planes , by using noise canceling feature without music
Noise canceling headphones

Noise canceling headphones have an inside microphone on each earpiece that work with an electronic circuitry to create an opposite sound wave to reduce wave. Up to 75% ambient noise cancellation (12dB at 30Hz)
Monitor switch

Convenient monitor switch located on the battery box. Switch turns off the Noise Canceling feature (Red Power LED off) and silence the music. Ideal to listen to announcement, flight attendant, or any external sound without the need to take the headphone out. Power button just turns the Noise Canceling feature but do not turns/silence the music off
In the ear design

In the ear design fits comfortably inside the ear, eliminating headband ideal for enjoying music while exercising, skating or dancing
Battery box

Small battery box for AAA battery
Convenient passive feature

Convenient passive feature that allows the headphone to function as regular stereo headphones without battery (noise canceling not activated) so one can take only one pair of headphones (using battery and Noise Canceling features in noisy environment; or saving by not using battery and not using Noise Canceling feature on quieter environments )