Coghlans Survival horn

The Coghlan's Emergency Survival Horn is very loud! It operates with the simplicity of a mouth horn and blasts out audible sound up to 120dB. The membrane can be easily replaced with any thin flexible film. Features a stone and twig guard to protect the rubber membrane and comes with a break-away lanyard. Durable polypropylene construction floats and is easily seen with the blaze orange color. Loud enough to be heard more than a mile away.