Falcon Safety Aqua Blast Personal Watercraft Horn Emergency Air horn to signal for help even when submerged under water Attaches to personal flotation devices in seconds Floats. Weight 1.5oz 100% ozone-safe, rust-resistant and Non-Flammable 100% ozone safe & non-flammable 100% rust resistant Delivers a shrill, piercing blast that signals for help even after being submerged in water Attached to your personal floatation device inseconds with velcro strap Almost impossible to lose in the water - it floats