Designed by search and rescue professionals, Whistles for Life’s safety whistle provides you with the best chance for survival in a disaster or life-threatening situation. Producing up to a 120 Decibel blast through 3 separate sound chambers, this safety whistle is an instant signal of an emergency and the need for help. Two outer pealess chambers create separate omni-directional frequencies, while the center chamber with pea creates the staccato sound, critical for rescuers to discern the whistle over environmental noise such as howling wind, rushing water, machinery or emergency vehicles. Manufactured in the USA of the strongest ABS plastic, this whistle will not fail or crack like cheaper polypropylene whistles. Our whistle meets the most stringent requirements of life saving organizations around the world, which is why Whistles For Life is trusted by Government Agencies, the National Association for Search & Rescue, the National Safe Boating Council, and many more!