Streetwise Security Products Streetwise Black Jack 21,000,Stun Gun Squeeze and stun Technology:the stun gun can be activated quickly and easily by simply squeezing it Loud alarm: self-defense experts say that a loud alarm is one of the best deterrents to Attack. In the past a personal alarm needed to be purchased and carried separately........now this feature is built in to this device Disable pin: prevents an attacker from taking the stun gun away and using it against you Built-in Charger: the Slide-Out plug on this unit allows for easy charging Lifetime Warranty: the black Jack 21,000,000 is made by streetwise security products-the leader in the personal protection industry and comes with a Lifetime Warranty