WHEN YOU NEED TO BE HEARD, 120 DECIBELS CUTS THROUGH EVERYTHING: A whistle gets lost in traffic, wind, and engine noise. This air horn fires a 120 dB blast loud enough to be heard from a half mile away, over boat engines, outdoor noise, and crowds. MEETS U.S. COAST GUARD REQUIREMENTS FOR BOATS UP TO 65 FEET: Approved for vessels up to 65 feet and 20 meters. No batteries or charging needed. Ready to use instantly whether on the water, on a trail, or in an emergency. MADE IN THE USA WITH HFC-152A PROPELLANT: Difluoroethane maintains higher pressure in cold conditions and won't lose power as temperatures drop. Manufactured to strict safety standards trusted by boaters, lifeguards, and safety professionals. COMPACT ENOUGH TO CARRY ANYWHERE: Fits in a jacket pocket, backpack, gear bag, or dry bag. Use it boating, hiking, running, camping, or at any outdoor event. Snap the horn onto the can in seconds and it is ready to use. ALSO AVAILABLE WITH HORN INCLUDED: Refill cans fit the 1.4 oz Better Boat Air Horn. Also available as complete kits in 1.4 oz or 3.5 oz. Select your version above. Better Boat is a family owned American company in Miami Beach, Florida You are on the water and a boat is bearing down through the fog. You are running alone and something is wrong ahead. You need to be heard right now from a distance. A whistle or shouting gets lost in engine noise, wind, and crowd noise. What gets through is 120 decibels. The Better Boat Air Horn fires a 120 dB blast that travels a half mile in open conditions. Meets U.S. Coast Guard requirements for vessels up to 65 feet and 20 meters. No batteries. No charging. The horn snaps onto the can in seconds and is ready to fire on demand. Manufactured in the USA using 1,1-difluoroethane propellant. This is the propellant standard for American-made air horns that meet U.S. safety certifications, producing a consistent, powerful blast from the first use to the last. Use it on a boat, kayak, or jet ski as required safety equipment. Carry it when running, hiking, or walking. Store it in a dry bag, backpack, emergency kit, or gear bag. Take it to campgrounds, race tracks, or sporting events. Small enough to keep with you wherever you go. Loud enough to be heard over boat engines, traffic, and outdoor noise when it matters. Refill cans fit the 1.4 oz Better Boat Air Horn. Also available as a complete kit with horn in 1.4 oz or 3.5 oz. Select your version above. Better Boat is a family owned American company based in Miami Beach, Florida.