Emitter:one LED, cool white orneutral white , mounted on copper DTP MCPCB;  Color temperature:cool white: 6500K;Netutralwhite: 5000K; Netutral white: 5700k;  Flux:2400 lumen;  Intensity:190,000cd;  Range:875 meters;  Firmware:Tom E’s open-source GPL NarsilMv1.3 adapted by Texas_Ace;     Note: Forbidden to use a brokenskin or broken battery, which is easy to cause a short circuit.;  It is recommended to use 26650 battery, the flashlight can be used to the best.;     Battery:One 26650 cell (or a 21700/18650 cell) Cells are not included. Driver:Texas Avenger FET Driver with charging;  Reflector:High quality smooth reflector;  Lens:Glass with anti-reflective coating;  Body:Aluminum alloy with Type III hard-coat anodizing;  Button:Silicone rubber;  Ingress rating:Equivalent to IPX7, do not immerse in liquids;  Impact resistance:Up to 1.5 meters;  Weight:Approximately 295g without cells;  Dimensions:170mm*69.5mm*34.5 (length*head diameter*body diameter);     Package Incleded: 1 * Light;  1 * 26650 5000mAh 3C Power Battery;  2 * Spare Waterproof O-rings;  1 * Lanyard;  1 * User Manual