This professional lifeguard whistle has such an extremely loud and piercing sound that it can even be heard underwater. Currently used by many U S military units, police departments and emergency and diving operations. Can be blown underwater.

• World's LOUDEST whistles - Twice as loud as the "best" whistle made - 130db!
• Can be heard above virtually any competing sound
• Will perform in any wet or dry environment
• Works underwater!

Technical Information
The Storm All-Weather Safety Whistle is the loudest whistle on the market. It's unique patented design allows it to be heard under water, up to 50 feet, because the sounding chamber forces all water to be purged when the whistle is blown. Made in the USA. It's perfect for divers, lifeguards, and for recreation! Creates a clear, high frequency sound, with a power rating over 75% greater than other referee and safety whistles.