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
- UPC: 867925000207
- ASIN: B01MUGZE9A
- Brand: HyperWhistle
- Manufacturer: Wattre Inc.
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