Built-in Google Assistant & Amazon Alexa Control your headphones with your voice thanks to Google Assistant built-in to the Bose Quiet Comfort QC35 II Wireless Bluetooth Noise-Cancelling Headphones. Press & hold the action button & let your assistant know what you want to do  play music, adjust the volume, you can even receive texts & ask questions. You can also control the headphones using Amazon Alexa via a software update, making it even easier to stay in control of your music at all times. Bluetooth headphones Bose Quiet Comfort QC35 II deliver a high quality audio experience directly from your smartphone or tablet, completely wirelessly using Bluetooth or NFC. Bose's impeccable sound always ensures you hear audio at its best, & with a volume optimised equaliser whatever you're listening to sounds great whether it's quiet or loud. Download the free Bose Connect app to your smartphone for extra control & features  manage connections, share your music & more. Active noise-cancellation Immerse yourself in music with the Bose Quiet Comfort Headphones. They have active noise cancellation, & it's adjustable so you can set it to suit your listening environment. Block out everything on a busy train & relax into your daily commute, or switch it off to stay alert. Built-in battery With a built-in battery that lasts up to 20 hours per charge, your headphones will easily last throughout the day  & into the night. If they do happen to run out of power, you can still listen with the included cable
- just connect to your device & they're instantly ready to use. High quality design Built to last & built to feel great, the Bose Quiet Comfort Noise-Cancelling Headphones are the perfect mix of functionality & comfort. Tough materials such as stainless steel & glass-filled nylon add strength, while luxurious Alcantara on the earcups is a joy to wear.