1986 wrote:
My pair of Sony WH-1000XM3 can do that, because a core group of NC headphone users is frequent flyers, and Bluetooth is often not allowed on flights. The catch is that you have to keep the cable connected to it, otherwise the headphones shut down after 10 minutes. If you're OK with the cable, you don't need Bluetooth to use the NC function.
I guess if you only want it on one setting, forgot about that. With the Bose 700's, with cable it's on full noise cancelling which is too quiet if you need to hear outside noise. But bluetooth has never been proven to cause any ill effects unless you are extremely sensitive.
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WRLL