QuietComfort 35 II Wireless Headphones are engineered with renowned noise cancellation that makes quiet sound quieter and your music sound better. With Google Assistant and Amazon Alexa built in, you have instant access to millions of songs, playlists, and more - hands free. Simply choose your voice assistant and ask away. If you're not an Amazon Alexa or Google Assistant user, don't worry. You can still use the Action button to adjust your level of noise cancellation between three settings. And that's just the beginning. QuietComfort 35 wireless headphones II are now enabled with Bose AR, a first-of-its-kind audio augmented reality platform.