Who does not love a brilliant idea? Self-defense is a whole lot easier with this innovative design. It’s the world’s first hybrid iPhone case combines stun-gun technology, plus offers an additional 20+ hours of battery life. The Yellow Jacket delivers 650 Volts of electricity while increasing your safety, battery life and peace of mind! For busy iPhone 4 owners that need an immediate, practical form of self defense. Pepper Spray has become a thing of the past with the Yellow Jacket.