The Bose QuietComfort® Headphones are by far some of the best I’ve seen. Using microphones inside and outside of the ear cups, Bose has created an adaptive noise cancelling system that is capable of blocking out almost all minimal background noise. After all, who really wants to be interrupted while you listen to your favorite song? Bose has implemented their TriPort® acoustic headphone structure to ensure tonal balance and over all audio performance. Run on only an AAA battery, this headset will last about 35 hours per battery. Another great feature that Bose has included is an iPhone compatible design complete with a remote for controlling volume/shuffle/skipping, and a mic for hands-free calling. Overall, this is a feature rich package that is sure to please any one out their wanting an above-par listening experience.