Yellow Jacket is the world’s first smartphone defense case that is scheduled to hit the market nationally for iPhone 4 & 4S in Fall 2012. The idea for the device came to the founder, Seth, when he was brutally robbed one peaceful evening inside his own home and was utterly defenseless–despite owning firearms and a stun gun. After this tragic event, Seth was determined to incorporate a self defense product into the most widely used device in the world–the iPhone. The final product is a 650K-volt stun gun that doubles as an extra battery that will boost your phone’s life by 20 extra hours. The case is not yet in production but you can pre-order one now for $100.