Using the latest in active noise cancellation (anc) technology, these headphones help block external distractions and are recommended for those who live, work or frequently travel in noisy environments. Pack includes protective travel case, 2 cables, 2 adaptors and 4 AAA batteries (anc requires 2 AAA to operate). Active noise cancellation reduction (anc) -17db. Suitable for use with all 3.5 mm (1/8"e;) audio devices.
