Sony headphones, little used, model WH-CH710N AI noise cancellation with dual noise sensor technology allows you to isolate the world around you to suit your environment, or choose to let it in using ambient sound mode. These long-lasting wireless headphones with Bluetooth and Near Field Communication (NFC) offer up to 35 hours of playback. New 30mm drivers deliver superior sound quality as you'd expect from Sony headphones. Enjoy clear hands-free calls and voice control on the WH-CH710N. Designed with soft oval ear pads, these headphones are built for all-day comfort.