New Innovation! World's first "Smart-Horn"!Patented Light-Up Technology! Multi-Function LED: Solid Beam, S.O.S., Emergency Flasher .8 oz./120db Sound Blasting Power!High-impact acoustically designed translucent trumpet. Replaceable batteries and propellant canisters. (Light lasts up to 96 hours in flashing mode). Ozone Safe, Non-Flammable. Meets Coast Guard regulations for boats up to 65'. Sound can be heard for a mile! Boating, Sports, Industrial, Construction Sites or Home & Office Security.