Source: U.S. imports CREE XML - T6, the LED 800 lumens Material: aluminum alloy , three anodizing , tail button tactical switch The range of : more than 500 meters ( all aluminum smooth optical glass ) Stall mode : flash of light - light - low light - burst -SOS Shell color : titanium or black Battery: one 18650 lithium-ion battery Specifications : 168mmX42mmX29mm