All-Weather Safety Windstorm Safety Whistle - Sports- Hunting- Waterproof- Protection - Yellow

Loud and waterproof. Blown and heard on land, up to 1/2 mile, and even underwater, up to 50 feet. The Windstorm utilizes a patented harmonic resonance dual-chamber design where high and low frequencies are focused into an extremely loud single frequency with double the standard amplitude. The result is a clear, high frequency sound with a deeper, more powerful tone thatâs significantly louder and more easily heard than other safety whistles. A pea in the upper chamber results in a trill sound that is unmistakable from anything else in nature.

Extremely loud for personal protection - emits noise that draws immediate attention. Ideal for sporting events, campers, hikers, boaters, hunters, scuba divers, and game officials. Easy to grip high-impact thermoplastic construction with keyring. A.