Surefire 6PX Tactical LED Flashlight 2011 MODEL (200 lumen) 6PX-A-BK Black Virtually indestructible LED emitter regulated to maximize light output and runtime Precision micro-textured reflector creates smooth, optimized beam; Includes high-energy 123A batteries with 10-year shelf life Tough polycarbonate window resists impact; WeatherproofO-ring and gasket sealed High-strength aerospace aluminum body, Mil-Spec hard-anodized for extreme durability Tactical tailcap switchpress for momentary-on, twist for constant-on