The G19 casts a nearly perfect circle of smooth and consistent light. At just 4 inches in length, it can be carried almost anywhere and has an impressive 54 lumen output, making it a useful tool for a variety of situations. Built tough, an impact-resistant, lightweight aluminum casing resists rust and corrosion. The G19 also features an unbreakable LED and rubberized O-ring for reliable water resistance and durability.