Bose QC35: update did not interrupt noise cancellation - Somag News
Checking the software or firmware version - QuietComfort 35 wireless headphones II
Bose QuietComfort 35 II Noise Cancelling Bluetooth Headphones - Wireless, Over Ear Headphones with Built in Microphone and Alexa Voice Control, Black, Standard Headphone Size: Amazon.co.uk: Electronics & Photo