The Surefire 6PX PRO is a compact tactical light featuring a 600 Lumen high intensity LED that produces enough light output to temporarily disorient an assailant in the dark. LED lights have no filament so they are immune to shock which makes them ideal for mounting on a firearm. The entire body and bezel are crafted of aluminum and the bezel even features teeth - turning the flashlight into a possible last line of defense. The 6PX PRO also features another low output setting that functions at 15 Lumens allowing the battery life of 40 plus hours.