Bose QuietComfort 35 II Wireless Noise Cancelling Headphones are over-ear headphones from Bose featuring world-class noise cancelling technology, and now they're optimized with Amazon Alexa and the Google Assistant. Enjoy balanced audio performance at any volume with volume-optimized EQ. And you can make or receive clear phone calls, even in loud environments with the noise reduction dual-microphone system. Connect to your devices wirelessly with Bluetooth and NFC pairing, with voice prompts for easy Bluetooth pairing. Thanks to Amazon Alexa and the Google Assistant you can keep in touch, get answers and manage your day using just your voice with one-button access to the voice assistant of your choice. You can also access your phone's default virtual assistant, like Siri. Together, they can create astonishing real-world experiences and fundamentally new ways to work, travel, exercise, learn, play, and more. Wear these comfortable headphones all day because they're built with premium materials. Listen to your music wirelessly for up to 20 hours of long battery life from a rechargeable lithium-ion battery. Keep listening without battery power by connecting the included audio cable. Unlock more features and access future updates through the Bose Connect app.