The Bolt Siren Stun gun packs a huge punch for a small stun gun. With 5 million volts, it will easily bring an attacker to their knees. In addition it has a 120 Lumen flashlight that can be used to blind the attacker. It has a built in charger so no batteries are necessary. The best feature is a safety pin/kill switch. If you have the safety pin lanyard on your wrist, if someone takes the stun gun away from you, it kills the power, so it can't be use against you. At the same time a 120 decibel alarm goes off, bringing attention to the situation. It comes in 4 color choices: black, red, pink or purple.