Early investors might want to check out this new cell phone case called “yellow jacket”, available for the 4 & 4S model of iPhone with a built-in stun gun. The case has safety features built in so you don’t shock yourself when talking on your phone but easily unlocks in case of danger. Even better is that you can use the life of the stun gun to extend your battery in need!
the Yellow Jacket has another effective use for your phone that almost outshines the feature function. The device is capable of extending the phones battery life up to 20 additional hours.