HyperWhistle The Original Worlds Loudest Whistle up to 142db Loud, Very Long Range, for Referee, Coaches, Instructors, Sports, Teachers, Life Guard, Protection, Self Defense, Survival, Emergency uses

$11.95

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Description

Worlds’s Loudest Whistle

SPL up to 142dB 8x louder than a common whistle

2 mile usable range

Anti-microbial composite, all-weather construction

Unique radial tri-frequency design

Naturally Buoyant

Works in all weather environments, including underwater

Patented Design US8925478

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