These flashlights are engineered to meet the demands of police, military, and security professionals worldwide and are now available to civilians. Not only will the flashlight illuminate an area, it can also protect you. When shined in the eyes of an attacker, the ultra-bright light can have a temporary blinding effect, making it easy for you to get away. It has a slide zoom that allows you to adjust the size of the light. The belt clip (included), makes it easy to carry. At about 3 1/2 inches long, this compact tactical LED light boasts features and brightness of models twice its size. It's perfect to carry in your car, pocket, or purse so you'll never be left in the dark again! Requires a 14500 Lithium-Ion battery (included) or 1 AA battery (not included).