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From half to a few grand and upward. More power and battery life.
But I gather from divers that have tried them, it's generally a lot less hassle to just swim where you want to go.
( , Tue 11 Feb 2025, 11:57, Reply)
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I think if they're not in widespread use in commercial diving or the military, it suggests they're not actually that useful.
( , Tue 11 Feb 2025, 14:25, Reply)