The two output levels of this light are High (200 lumens, which will last for about two hours), and Low (15 lumens of light, which will last for forty-five hours). Whatever setting you are using, the 6PX Pro's micro-textured reflector creates an optimized light beam, so that you will not waste more battery power than you need to. Besides reliability, this flashlight is also geared toward durability. Evidence of this is the aerospace aluminum body, which is Mil-Spec hard-anodized. Another feature geared toward durability is the polycarbonate window, which is impact resistant. To further ensure protection against the elements, the SureFire 6PX Pro's O-ring is waterproof.
