HyperWhistle

Now this thing is cool. The company claims its the "world's loudest whistle," the HyperWhistle has a sound output of 143dB and can travel up to 2 miles - thats 8x more powerful than standard sporting whistles. Perfect for personal security, camping, hiking, sporting events and calling your kids in for dinner. From actual user reviews: 'Very loud - my ears are ringing after blowing it, and I like the pain'...
Buy From HyperWhistle / $13
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