The Firefly is advertised as the "world's strongest stun gun", with 950,000 volts packed into a compact handheld package—small enough to fit into your palm or pocket. This miniature, hand held stun gun has a safety switch, packs a wallop and runs only on batteries, so there's nothing complicated to deal with.
You can sometimes buy the Firefly as part of a self defense kit that also contains a holster, pepper spray, and batteries. With highly effective and easy to aim pepper spray covering you from a distance and the Firefly protection at close quarters, you're fully equipped to meet whatever life throws at you with one of the smallest devices around. Invest in one today!
 

By touching an attacker with the device, you hold the prongs of the tiny Fire fly against him for three to five seconds for an instant effect that lasts five to ten minutes. The electrical current takes charge of the body, convulses the muscles and drops even a big, mean guy right to the ground. Sometimes just a warning will do: fire the Firefly into the air and let the criminal see the electrical current passing between the prongs of the weapon. But be aware: if the attacker is stoned, drunk or crazy, you may just anger him further. If you think the attacker could take your weapon away and use it on you, it's better to keep it hidden and surprise him with it instead.