The Falcon FSH Sports Horn is ideal for coaches, sports officials, camp counselors and lifeguards. It is 100-percent ozone-safe and packs more blasts per can than its non-ozone-safe counterparts. The trumpet has a rugged, high-impact construction and is guaranteed unbreakable. It is removable for easy transport. This sports air horn meets US Coast Guard requirements for boats up to 65'. Refills are available and sold separately.