The Defender lives up to its name in more ways than one. Machined from aerospace aluminum, its crenellated Strike Bezel and scalloped tail cap turn this robust illumination tool into a potential impact weapon, so it can take a beating-or give one if necessary. The Defender body also features a Type III Mil-Spec hard-anodized coating for abrasion and corrosion resistance in foul weather or other adverse environments. A bolstered dual-function pocket clip makes bezel-up or bezel-down pocket storage easy too. The dual-output E2D Defender Ultra (E2DLU-A) utilizes SureFire's virtually indestructible high-performance LED. The very heart of these slender and powerful lights, it pumps out an intense, 1,000-lumen beam, precisely focused through our optimized Total Internal Reflection lens. That's plenty of output to momentarily disorient virtually any adversary and gain a crucial tactical advantage. The Ultra adds the extra value of dual-output capability. Clicking its tail cap twice yields a battery-saving 5 lumens, ideal for the most basic low-light tasks such as map reading and other close-range applications. And with a continuous low-output run time of 63 hours, you can trust the Ultra to keep you company from sunset to sunrise.