I have worktunes connect that are not helmet compatible. I love them for running the tractor or splitter. No radio, just Bluetooth to the phone. My version has a microphone and can take calls too. Built in battery charge via USB.
We have 2 pairs of those and one worktunesconnect +AM/FM that is Bluetooth and radio, but no phone. ( updated model now support phone too) That one takes AA batteries. All work well - recommended.
I believe I saw helmet compatible similar ones once - just the muffs to install on your helmet. Can’t recall where.
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