⭐ You feel it at the flip of a switch—noise fades, and your music soars. That’s the power of the Acoustic Noise Cancelling technology, which continuously measures, compares and reacts to outside noise—then cancels them with the opposite signal. ⭐ 20 hours battery life. And when it finally runs down, a quick 15-minute charge gives you another 2.5 hours. ⭐ Wrapped in Alcantara®—the soft covering material used by prestigious international companies in various applications, like yachts and high-end automobiles—it provides a welcome comfort designed for all-day listening. The ear cushions are manufactured from a synthetic protein leather, and have a silicone bead for passive noise reduction. ⭐ Compatiable with BOSE CONNECT APP