The new OD40 is a long distance illuminator that projects a true collimated focused beam of high definition light that has been created specifically for object and target identification. It creates a crisp clean clear focused circle of light at long distances. The adjustable beam gives the natural eyesight the ability to function at its best without adverse reaction to reflected light. Constructed of aircraft grade aluminum the Optical Dynamics OD40 is shockproof and resistant to water and momentary submersion. It is compact lightweight and easy to handle weighs just 14 ounces with the two included CR123A batteries that provide constant operation up to 100 minutes. Its CREE LED delivers up to 650 Lumens.