The Storm Alert Whistle is one of the loudest whistles on the market. Its dual chamber construction means it can be heard over the roar of wind and even or even under water. Attach one to your backpack, whenever you venture into the backcountry. It's a survival basic. Incredible loud whistle. Dual chambers. Can be heard over wind or even under water. Extremely durable plastic construction with lanyard ring. Wt. 1 oz.
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