Nitecore MH12S Dual Fuel Compact FlashlightUtilizes a Luminus SST 40 W LED with a max output of 1,800 lumens Max peak beam intensity of 21,600cd and max throw of 294 meters An optical system combined with crystal coating and "Precision Digital Optics Technology" (PDOT) Powered by a 21700 high capacity Li ion battery while compatible with 18650 and CR123 batteries, to provide a runtime up to 1,500 hour Tactical Mode and Daily Mode available A power indicator beneath the side switch indicates