Riton Optics X301QD : If you\'re looking for a robust lightweight and incredibly durable red dot sight the RT-R Mod 3 Rifle Red Dot (RRD) is the perfect optic for you. The RT-R Mod 3 RRD has a 2 Minutes of Angle (MOA) dot is night vision compatible and can run up to 1600 hours on one single CR2032 battery. - Aircraft Grade Aluminum with Rugged Design Ready for the Toughest Environments - 100% Waterproof Fog proof and Shockproof (tested up to 1200 G\'s) - Assembled in EP-Level Clean Room - Battery : 1x CR2032 - Battery life : 1600 hours on highest setting - Red illumination with 6 levels of brightness and on/off in between each level - Comes with one-piece cantilever mount - Magnification : 1x - Parallax Setting : 50yds - Objective Lens Diameter : 29mm - Lens Coating : Fully Multi-Coated Full Wide Band Waterproof Coated Low Light Enhancement - Dot Size : 2 MOA Red Dot - Field of View at 100 yds : 68ft - Material : 6061-T6 Aircraft Grade Aluminum - Weight : 9.5oz/269g - Length : 3.76in/95.5mm - Eye Relief : Unlimited - Exit Pupil : 28mm - Click Value at 100 yds : 1 MOA - Adjustment Range : 120 MOA