The Seasense Air Horn Large is easy to operate. It is a push button horn. It can be heard from 1 mile away. A refill can is available seperately. It is an 8-ounce Non flammable can. It is ozone safe air. It meets USCG requirements and is an impact resista Easy to operate push button horn Can be heard up to 1 mile away Refill can available separate 8-ounce non glammable, ozone safe air Meets USCG requirements, impact resistant horn
