3 MOA Green Dot. 22×26 mm viewing window. RMR Mounting Footprint & Picatinny mount included. Auto shut off and INSTANT- ON® technology. High grade aluminum alloy body, lightest in its class. Designed from the ground up to ensure clarity, solid function, and rapid target acquisition. Designed to fit full size handguns, shotguns, and rifles. With 2 night vision brightness settings, the RFX35 is the perfect optic for your pistol in any light condition. Tested in the harshest conditions to ensure your optic will be ready whenever you need it. 8 Visible & 2 Night Vision Brightness Settings TECH SPECS. User controlled and INSTANT-ON®. 1.93″ x 1.16″ x 1.2. 30,000+ hours (middle settings). 4 °F to 130 °F. Manufacturing defects vary by individual Brands. We will give instructions as what is to be done on a case by case basis.