Blast Knuckles A police stun gun by Zap is a unique patented design that is quickly becoming a very popular stunning device. This is a powerful stun gun packing 950,000 volts of stopping power. The design is alot like brass knuckles. Just slide your fingers into the soft rubber coated stun gun. The contour grip assures full control. Just touch your attacker to instantly repel them and give you time to get away. A safety switch is built in and accessible to your thumb. Once you grab the Blast Knuckles stun gun you can flip off the safety and fire with the same hand. No need to use two hands. One size fits all! Uses 3 Lithium batteries (included). FREE leather belt holster ($15.00 Value) designed to allow quick access and deployment of this amazing stun weapon. One Year Warranty