The Bose QuietComfort 25 Acoustic Noise Cancelling headphones (QC25) give you crisp, powerful sound and quiet that lets you hear your music better. Bose advances their industry-leading headphones with the latest proprietary Bose Active EQ and TriPort technology, giving the music you love deep, clear sound. At the same time, Bose noise cancelling technology monitors the noise around you and cancels it out, helping you focus on what you want to hear whether its your music, your calls or simply peace and quiet. With a distinctive design and two color options to match your style, these headphones look as good as they sound. Theyre also comfortable, durably made and easy to stow, with earcups that pivot to fit in a small carrying case. Get yours today! Crisp, powerful sound and quiet that lets you hear your music better. The latest proprietary Bose Active EQ and TriPort technology give your music deep, clear sound. Bose noise cancelling technology monitors the noise around you and cancels it out, helping you focus on what you want to hear whether its your music, your calls or peace and quiet. Soft ear cushions for a comfortable around-ear fit. Convenient inline remotemic for select iPod, iPhone and iPad models, plus select smartphones. The addition of unpowered audio enables continued music listening even if the battery runs out. Easy to stow, with folding earcups that fit in a small carrying case thats easy to take with you. AAA battery for up to 35 hours of play time.