I use this speaker on the inside of my hard hat and welding helmet. He has sniffed his nose in many different places and constantly finds himself in a filthy environment. It still sounds just as good as it did when I bought it. I just wish it was a little smaller so it fits better in places. The only downside I've found is that the range is just as unperturbed outdoors as when I'm on the opposite side of my body. At my place of work I've seen it stretch slightly to 150 feet. But they probably have bluetooth repeaters for the faucet controllers.
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