Wolo (496 E-Z horn Hand Held Electronic Horn Powerful hand held electronic horn With a simple press of the trigger button, E-Z Horn emits a powerful ear piercing alerting sound Ergonomically designed, the handgrip is comfortable to hold and is non-slip A standard 9-volt battery powers the horn, (not included) Comes with a quick release, stainless steel belt clip, simply press the tab on the belt clip, E-Z Horn is released and ready to use