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we spent 40 years of research in pursuit of the best noise cancellation in the world then we obsessed about making it wireless the result quietcomfort 35 wireless headphones free yourself from wires and connect easily to your devices with bluetooth and nfc pairing volume optimised eq gives you balanced audio at any level while a noise rejecting dual microphone system provides clear calls even in windy and noisy environments these are our best headphones in making them wireless we had one goal seamlessly merge bluetooth and our acoustic noise cancelling technology together with no compromise to the technologies or the audio performance that we re known for try them for yourself then try to live without them industry leading noise cancellation makes quiet sound quieter and music sound better wireless connectivity to your devices through bluetooth and nfc pairing up to 20 hours of wireless listening per charge and 40 hours when wired premium materials make them lightweight and comfortable for all day listening bose connect app helps manage paired devices and gives you a personalised experiencedimensions weight without the cable headphones h x w x d 18 x 17 x 8 1 cm 0 31 kg audio only cable 1 2 m usb cable 30 5 cmin the box qc 35 headphones airline adapter audio cable for wired connection usb cable carrying case