EagleTac D25LC2 CREE XM-L2 U2 850 Lumens Clicky LED Flashlight, Black LED: CREE XM-L2 U2 LED Battery: 2xCR123A battery, 2xRCR123A or 1x18650 li-ion. Batteries are NOT included Output: Led lumen: 850/557/69/7; ANSI FL-1 lumen: 618/411/51/6 Runtimes: (Turbo/high/med/low): 1.5/2.5/18/100+ hours