What's the problem with <10?
I believe that the C370 isn't made to be used in "very" cold water.
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What's the problem with <10?
G260 with yellow mouthpiece and yellow hose.
As far as I saw growing up diving in northern-european lakes, the plastic barrelled 2nd stages were prone to freeze-freeflow...What would make it not cold water compatible?
I'd not hesitate to use it in cold water