CREE XM-L T6 LED Bulb textured reflector 1Mode 1000Lumens 3.7-18V for Surefire C2 G2 Z2 P60 P61 6P 9P G3 S3 D2 Ultrafire 501B 502B Made by 6pcs CREE XM-L T6 LED, producing very bright beam of light (1000 lumens) Uses a smooth reflector, provides a more concentrated beam, and therefore a better throw (range) The body built of high quality aluminum alloy, and has a very solid construction Internal wiring applies the high efficient booster circuit, and can utilize the batteries in the largest extent Crenellated Strike Bezel provides enhanced self-defense capability