QuietComfort® 35 wireless headphones II are engineered with world-class noise cancellation. And now they're even better. With your Google Assistant built in, you can control music, send and receive texts, and get answers using just your voice. Just press and hold the Action button, and start talking. With QC®35 headphones II, you can go wire-free by connecting easily to your devices with Bluetooth® and NFC pairing, with voice prompts to walk you through the connection. The multi-function button continues to offer access to your phone's default virtual assistant, like Siri®. Volume optimised EQ gives you balanced audio performance at any volume, while a noise rejecting dual-microphone system provides clearer calls, even in noisy environments. They feature up to 20 hours of wireless listening per charge and are designed with premium materials that make them lightweight and comfortable for all-day wear. And the Bose® Connect app helps you set your preferred level of noise cancellation, unlock more features and access future updates. Get caught with a low battery? The included cable lets you plug in and keep the music playing.