QuietComfort 25 headphones are re-engineered to sound better, be more comfortable and easier to take with you. Put them on, and suddenly everything changes. Your music is deep, powerful and balanced, and so quiet that every note sounds clearer. Even air travel becomes enjoyable, as engine roar gently fades away. No matter how noisy the world is, it's just you and your music - or simply peace and quiet. Advanced noise reduction / QC25 headphones let you focus on your music, movies and videos. And they reduce what you don't want to hear. Like a crowded city street, cabin noise inside an airplane or a busy office. Advanced noise reduction technology and unique electronics make it happen. Even the ear cushions give you an extra level of quiet by sealing out some of the world around you. Expert tuning / When you wear these headphones, you'll hear ringing guitars and soaring vocals while deep bass and crisp drums drive the beat forward. Bose Active EQ and TriPort technology deliver performance so compelling, you'll want to listen for hours. And the fit's designed so you can. Inline mic & remote / These headphones are designed specifically for use with Android and Samsung mobile devices, so the inline microphone/remote puts music and call controls at your fingertips. Completely redesigned / QC25s are lightweight, and their earcups rotate even more for a better fit. The headband sits closer to your head, with luxurious suede-like material underneath for extra comfort. If the AAA battery runs out, you can still enjoy music without noise reduction. And the earcups pivot to fit in a compact case that's easy to carry.