Light Source : U.S. imports CREE the Q5 LED 200 lumens Material : aluminum alloy , three anodizing , tail button switch The range of : more than 300 meters (aluminum glossy light cup) Stall mode: Tighten Ningsong mode light - the light - low light - flash explosion Shell color : titanium color , black Batteries: 2 CR123 batteries Specifications : 122mmX23mX21.5mm