The G50 focusing LED flashlight features a twist focus using Coast's Pure Beam Focusing Optic System, providing superior beam consistency from spot to flood, with no dark rings typically associated with focusing flashlights. A lightweight aluminum casing offers great durability and will hold up to heavy daily use. Backed by Coast's lifetime guarantee against defects in materials and workmanship. Tested and rated to ANSI/FL1 standards by an independent laboratory.