What happens when you clear away the noisy distractions of the world? Concentration goes to the next level. That’s the power of QuietComfort 35 wireless headphones II. You get deeper into your music, your work or whatever you want to focus on. Proprietary technology continuously monitors and measures outside noise and then cancels it with the opposite signal. But we didn’t stop there. You can also adjust the level of noise cancelling between two levels to better fit your environment. So you can focus—really focus—on what matters.