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NEWS – At up to 142 decibels, the HyperWhistle claims to be the world’s loudest whistle. That’s about 8 times louder than a typical sports whistle. The HyperWhistle can be heard up to 2+ miles away! Imagine the feeling of security having this whistle with you when you go camping, hiking, and boating. They even say that you can use this durable whistle underwater… I’m not sure how that even works, but ok. At just $16.95, the HyperWhistle is available in black or orange from Amazon.
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I tried one. Unimpressive and not really that loud. Also, most of the sound blows back toward the user. I’d recommend a pass.