E-Z Horn is a powerful handheld electronic horn. With a simple press of the trigger button, the E-Z Horn emits a powerful, ear-piercing warning sound. Ergonomically designed, the hand grip is comfortable to hold and is slip-resistant. A standard 9-volt battery (not included) powers the horn. The E-Z Horn also has a spare battery compartment that can store one 9-volt battery as a backup, ensuring the user always has a working horn when needed in an emergency situation. No expensive cans of gas needed. The E-Z Horn comes with a quick-release stainless steel belt clip and nylon lanyard wrist strap.