Light up your target, not the whole back 40, with the Optical DynamicsTM Illuminator. Its Collimated Amplified Lens System throws light only where you want it and nowhere else. Imagine, a clear, narrow adjustable column of light that perfectly illuminates your target and not the entire area. It's all possible thanks to CALS,TM a patented photonics lens system that projects 100% of the light beam on the target. No light is wasted, sprayed or splashed back to illuminate you as you aim. Shine a bright Green beam up to 500 yds. wherever you need it.