With its broad 42mm aperture, the Condor 1.5-6x42 Riflescope will greatly enhance your eyes ability to see in dim settings. In addition, its fully multi-coated optics further maximize light transmission for brilliant images with impressive color reproduction and clarity.Features :Fully multi-coated lenses for added brillianceOne-piece aluminum tube assembly that is sealed with O-rings and purged with inert gas to prevent internal foggingCondor riflescopes have a digital rheostat that allows users to easily adjust dot brightness 1/4 click mode of adjustment with true re-zeroing capability to quickly adapt to wind and elevation changes