One of the craziest iPhone cases on the CES show floor comes from Yellow Jacket. Called the Smartphone Stun Gun Case for iPhone 5/5s ($150), it’s made for self-defense. Built into the protective case is an actual stun gun, capable of stopping assailants with electrical force.
Inside the case, there’s also an 1800mAh battery to recharge the iPhone. The stun gun attachment can be split off as needed, which means the case should be able to be used in all circumstances.