Sports and Safety Horns can be used as a signaling device in natural disasters, deterrent for dangerous/unfriendly animals, alarm for attackers (ear piercing blast), etc. Perfect for sporting events, hiking, boating, camping, tailgating, celebrations, parties, catastrophes, night safety, etc. Meets U.S. Coast Guard Requirements for Boats up to 65 ft/20 m. Can be heard up to a 1/2 mile away.