Windstorm All-Weather Safety Whistle

The All Weather Whistle Company Windstorm? Whistle was developed for military use. This whistle will outperform all other whistles with a decibel power rating of 94.7, while focusing nearly 100% of harmonic energy at the optimum 3250 Hz range of other high powered whistles. Wind Storm works in all conditions, in any weather or safety situation: blown and heard on land, up to 1/2 mile, and even underwater, up to 50 feet. A high-impact, non-corroding thermoplastic protective housing is easy to grasp, and the patented double chamber design allows it to be blown when held right side up or upside down, forcing all water to be purged when the whistle is blown.