6px ProThe 6PX Pro can trace its origins directly to the SureFire 6P that introduced the compact, high efficiency flashlight in 1988. Its LED provides two light output levels: a brilliant, penetrating, perfectly pre focused 600 lumen beam and a 15 lumen low output setting that lets you greatly extend the runtime per set of batteries. Its tail cap offers momentary on low, constant on low and constant on high. Its high strength aerospace aluminum body is