Enjoy your favorite music tracks in blissful silence with Denon’s AH-NC732 noise canceling headphones, which feature Denon’s Acoustic Optimizer technology for the most natural and balanced tonal range, free from cavity-induced coloration. The noise canceling function reduces ambient noise up to an astonishing 99%, letting you enjoy your music in the air, on the train, or anywhere you wish. Powered by a single AAA battery (easily available on-the-go), the AH-NC732 provides up to 40 hours of noise canceling function, and the headphones can be used without the noise canceling function as well. For relaxation in a noisy environment, the headphones can be worn with just the noise canceling function activated. The compact, lightweight foldable design easily tucks into the supplied compact carrying case, and the AH-NC732 is equipped with two cable lengths, along with a dual airline adapter plug, and a standard ¼” headphone adapter plug, and the audio cables are iPhone/Touch compatible (no adapter required).