The craziest iPhone case we've ever seen is the Volt — a stun gun case by a company called 247 Security. It delivers 50,000 volts of electricity while alerting the police and your friends of ...

When deployed, they can deliver up to 50,000 volts, which causes muscle spasms, pain and paralysis that can last for up to 15 minutes. The stun guns have high voltage but low amperage, so they ...