The Bose® QC25SMSGBLK QuietComfort® 25 Acoustic Noise Cancelling Over-The-Ear Headphones 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 more on what you want to hear whether it's 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. They're also comfortable, durably built, and easy to stow with earcups that pivot to fit in a small carrying case that's easy to take with you. A convenient inline remote/mic is included its compatible with select iPod, iPhone, and iPad models, plus select smartphones. The included AAA battery gives you up to 35 hours of play time. And the addition of unpowered audio enables continued music listening even if the battery runs out. These are headphones engineered to make you love the music you love even more and designed to let you enjoy it all day, every day, wherever you go.