Requires 1 AAA size Battery (Not included) for Nosie cancelling to work. Bose QC25 Wired Noise Cancelling Headphones.Already discounted price for the holidays. The item "Bose QuietComfort 25 Acoustic Noise Cancelling Headphones Black" is in sale since Thursday, December 20, 2018. This item is in the category "Cell Phones & Accessories\Cell Phone Accessories\Headsets". The seller is "aye027" and is located in Frisco, TX. This item can be shipped to United States.