Unified Marine Air Horns - $16.88

These super-loud, easy-to-operate and environmental-friendly air horns meet U.S. Coast Guard requirements for an on-board warning/signal horn. The sound funnels are made of high-impact plastic. A simple push of a button produces a signal that can be heard up to a mile away. The small version produces a 118db blast of sound and the large version generates a 127db signal. Ozone safe and nonflammable. Available: Small (3.5 oz.) Large (8 oz.) - $16.88