Cyelee Optics Chameleon-GSRS8 Reflex Red Dot Sight 1x26.5x22.5mm 8 MOA Dot Black. It utilizes a high-visibility blazing-fast 8MOA reticle. Purpose-built for concealed carry the width of the optics has been optimized to have the smallest profile possible as well as maximize ergonomics for handling your pistol slide. The STIG-RS(Astigmatism Relief System) reticle system is made for users with astigmatism and feedback is clear; many see the benefits of using Cyelee STIG-RS LED emitters. Additionally a larger 8MOA circle allows for lower brightness settings without harming reticle acquisition time passively assisting. Specifications for Cyelee Optics Chameleon-GSRS8 1x26.5x22.5mm Reflex Red Dot Sight: Manufacturer: Cyelee Optics Color: Black Fabric/Material: 7075-T6 Aluminum Magnification: 1 x Objective Window Size: 26.5x22.5 mm Reticle: 8 MOA Dot Illumination Type: LED Illumination Color: Green Brightness Settings: 10 Eye Relief: Unlimited Adjustment Click Value: 1 MOA Emitter Type: Open Parallax: Parallax Free Battery Type: Lithium Metal CR1632 Battery Life: Up to 50000 hours Water Resistance Level: IPX-7 Weight: 50 g Package Type: Box Red Dot Sights-Footprint: RMR Lens Type: Multi Coated Gun Type: Pistol Package Contents: Cyelee Optics Chameleon-GSRS8 1x26.5x22.5mm Reflex Red Dot Sight Cyelee Optics X004G5BOQF: Chameleon-GSRS8 Reflex Red Dot Sight 1x26.5x22.5mm 8 MOA Dot Black