Constructed of high-strength aerospace aluminum with Mil-Spec hard anodizing for extreme durability Virtually indestructible high-output LED regulated to maximize output and runtime Reflector shapes far-reaching beam with intense center and significant surround light for peripheral vision Dual-output tailcap click switchpress or click for maximum output, press or click again within two seconds for useful low-output setting Coated, tempered window resists impact and maximizes light output Weatherproof O-ring and gasket sealed |Includes energy-dense 18650 lithium-ion rechargeable battery, AC charger, and DC car charger