Enhance your shooting experience with the NcSTAR DRGB135T Red/Green/Blue Dot Optic, meticulously engineered for accuracy and adaptability. This precision optic features a user-friendly interface with a rheostat knob, providing customizable brightness levels for exceptional visibility in any lighting condition. LED (Light Emitting Diode) 100% Safe for the Eyes Unlimited Eye Relief for flexible mounting Rheostat Knob with Three Brightness Levels for each of the Red, Green, and Blue Dot reticles Includes 30mm Cantilever Weaver/Picatinny type Mount Ocular and Objective Flip-Up Lens Covers Powered by 3 Volt Lithium Batteries (CR2032) included Includes Extra Battery and Mounting Tools Black Anodized Aluminum Body Upgrade your gear with the NcSTAR DRGB135T for unmatched performance and reliability.