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The first image which annotates the controls has a "Push-to-Talk button" which is used for "Voice communication" and "AI assistant activation".

PTT sounds great, tiny walkie-talkies with user-provided antennas, and seems rugged too, I'd probably end up buying two at least :)

PTT isn't the issue. It's their intended use case.

It's a Flipper, the intended use case is "whatever you can think and do", it's not there for a single use case, none of the hardware features are.