Surefire G2X Tactical Flashlight, Single-Output LED, 600 Lumens, Tactical Tailcap Click Switch, 2x CR123 Batteries, Black G2X-C-BK SureFire's G2X(TM) LED illumination tools share many features" such as virtually indestructible high-efficiency LED emitters" 600 lumens of maximum output" precision reflectors" and sleek Nitrolon(R) polymer bodies. Their differences let you select the ideal light for your needs. The G2X Tactical provides a single output level - a brilliant" penetrating 600-lumen beam. It features a lightweight" high-strength Nitrolon(R) polymer body that's comfortable to hold in cold weather. The G2X Tactical comes with a press/click tail cap switch