The powerful 120-decibel emergency whistle provides the ability to be heard in life-or-death situations. If you can be heard, you can be rescued. It is of professional quality, waterproof, and UV resistant. The whistle produces multi-directional sound with three chambers. Its sound is discernible by rescuers over environmental noise, such as howling wind, rushing water, machinery, or emergency vehicles. The whistle features a hands-free mouth grip and meets anti-choking standards for children. It offers protection in extreme emergency situations, such as entrapment in the aftermath of a disaster, as well as during everyday activities like running, hiking, trekking, exercising, or coaching and refereeing. It is also useful for outdoor activities such as camping, skiing, and rock climbing. This whistle is ideal for isolated situations, as well as for professionals and rescuers in their work.