Here is another powerful stun gun that helps you defend yourself against dangers at any time. The Jolt J.A.C.K 77,000,000 Stun Gun is half the size of a normal stun gun and can be easily carried with your keys. It can be charged through a USB connection.
This stun gun also has a LED flashlight. It has two levels of safety built-in to prevent accidental discharge.
[where to get it]