Millett Tactical Designated Marksman DMS-1 1-4x24mm Illuminated Donut Dot Reticle Riflescope Body construction is one piece heat-treated aluminum tube Fully multi-coated optics deliver ultra-bright, razor-sharp images Fully multi-coated optics deliver ultra-bright, razor-sharp images Illuminated reticle with 11 brightness settings allows you to see your target clearly in low-light conditions Fully multi-coated optics deliver ultra-bright, razor-sharp images 1-4x magnification, 24mm objective; true 1x scope allows target acquisition with both eyes open at low power Illuminated reticle with 11 brightness settings allows you to see your target clearly in low-light conditions The "Dot-in-a-Donut" aligns naturally to give accurate shot placement at ranges of 3 meters to 400 meters Fully multicoated optics deliver ultra-bright, razor-sharp images 30mm tube; spare CR2032 battery stores inside windage cap