The iPhone 4-4S Stun Gun Case is a unique combination of smartphone case and stun gun. The case contains a 650K volt stun gun capable of taking down an attacker. Protect your phone and your assets with this case which also houses a rechargeable battery that virtually doubles the life of your phone. iPhone 4-4S Stun Gun Case is capable of giving the smartphone up to 20 additional hours of standby battery life. It has 2 safety features that help prevent accidental discharge while being easily deployable in an instant.