SureFire 6PXDBK 6PX Pro Black Anodized 15/600 Lumens White LEDGo With The Game Changer. The 6PX Pro traces 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