NC STAR 35MM RED GREEN BLUE DOT OPTIC TANa Tan Optic Body & Mount Color a LED (Light Emitting Diode) 100% safe for the eyes a Unlimited eye relief for flexible mounting a Rheostat knob w/(3) brightness levels for each of the red green & blue dot reticles a Black ocular & objective flip-up lens covers a Powered by 3 Volt lithium batteries (CR2032) included a Durable Tan powder coated aluminum body a Includes extra battery & mounting tools a Magnification: 1x a Reticle: Dot (Red Green & Blue) a Dot Size: 3 MOA a Objective Lens Size: 35mm a Lens Coating: Platinum a Mount Type: Cantilevered 30mm mount at 1-1/2 centerline height-Rail clamp on w/thumb nut-Compatible with Weaver/Picatinny/Mil-Std 1913 type rails a Length: 5.0 a Weight: 8.9 oz.