The X300 WeaponLight's solid-state light-emitting diode sits behind SureFire's Total Internal Reflection lens which is geometrically designed to gather the LED's light and shape it into a tightly focused central beam with a gradually diminishing corona to prevent any surprises in closer-range applications. With a maximum output of 110 lumens, the X300 is bright enough to be effective for long gun applications. The LED generates five times the light of a two-D-cell flashlight and produces tactical-level output for 2.4 hours on two lithium 123 batteries. A hard-anodized aerospace-grade aluminum body protects the X300's internal circuitry. The light features ambidextrous switching and an assortment of remote switches are available for many handgun models. The X300 weighs 3.7 ounces with batteries and easily slides onto most handguns.