How to Use Bose QuietComfort 35 Headphones II - Support.com TechSolutions
Bose QuietComfort 35 II Noise Cancelling Bluetooth Headphones— Wireless, Over Ear Headphones with Built in Microphone and Alexa Voice Control, Silver : Electronics
The Verge: "Bose QC35 II owners complain of degraded noise cancellation after recent updates" : r/bose
How to downgrade your Bose QC35 / QC35 II with firmware 3.0.3 / 4.5.2 - YouTube