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World's Loudest Whistle

For the mere price of $13 you can snag the HyperWhistle, the world's loudest whistle. The HyperWhistle reaches 142 decibels and can be heard nearly 2 miles away.

If you're looking for a safety whistle (or just a way to be really annoying at sporting events), the HyperWhistle might be right up your alley.