All-Weather Safety Whistle

The Windstorm Whistle is a compact, waterproof safety whistle that works reliably underwater, in rain, and after full submersion. A patented double-chamber design purges water automatically when blown, working right side up or upside down. Sound output is rated at 123 decibels, tuned to 3250Hz, carrying up to half a mile on land and up to 50 feet underwater. Built from high-impact, non-corroding thermoplastic, it takes minimal effort to blow, useful for signalling a buddy or attracting surface attention after a dive. Dimensions are approximately 61.5mm x 42.8mm x 21.6mm. It's SOLAS and Coast Guard approved, and used by the US Coast Guard, police, military, and search and rescue teams worldwide.