Compact new shape, tested for secure fit. 4-mic call technology for superior call quality wherever you are, even in noisy and windy environments. ACTIVE NOISE CANCELLATION - ANC blocks out background noise, so you'll hear your music, and nothing else. More power, more freedom, with more than 7.5 hours of battery and a total of 28 with charging case (ANC on). Make your music sound exactly the way you want it to, with a customizable equalizer, available in the Jabra Sound+ App.