SUREFIREA(R) E1B BACKUP(TM) WITH MAXVISION(TM) a High-output White LED flashlight a Sleek ultra-compact design a Specially developed reflector creates wide smooth MaxVision Beam(TM) for closer-range applications & maintaining situational awareness a Programmed to lead with high output a Tailcap pushbutton switching lockout tailcap & 2-way pocket clip that allows for bezel-up or -down carry a Lightweight rugged MIL-SPEC hard-anodized aluminum body with stainless steel pocket clip & a coated tempered window a Weatherproof (O-ring & gasket sealed) a White LED Output (High/Low): 400 / 5 Lumens a White LED Runtime (High/Low): 1.25h / 50h a Powered by (1) 123A battery (included) a Bezel Diameter: 1.13 a OAL: 3.87 a Wt.: 2.95 oz