Surefire G2ZX Combatlight Flashlight, Single-Output LED, 600 Lumens, Tactical Momentary-On Tailcap Switch, Black G2ZX-C-BK The single-output G2ZX" designed and built specifically for tactical use" produces 600 lumens of brilliant white light from a high-performance LED that is virtually immune to failure since there's no filament to burn out or break. It uses a micro-textured polycarbonate reflector to create a smooth beam with optimal light distribution-excellent reach combined with significant surround beam for peripheral vision. The G2ZX bezel is matte-black Mil-Spec hard-anodized aerospace aluminum and the body is tough" corrosion-proof Nitrolon(R) polymer" both providing superior scratch" corrosion" and abrasion resistance. The Combat Grip design-reduced-diameter mid-section and rubber grip ring-is perfect for flashlight/handgun techniques and also provides a secure hold even with wet" cold" or gloved hands. Features ergonomic tactical switching-press the tail cap switch for momentary-on" twist the tail cap for constant-on.