Primary Arms Classic Series 1x24mm Micro Reflex Red Dot Sight 3 MOA Green Dot Reticle Black. Key upgrades include AutoLive motion-sensing technology to maximize battery life and fully multicoated lenses for enhanced durability and clarity. Specifications for Primary Arms Classic Series 1x24mm Micro Reflex Red Dot Sight: Manufacturer: Primary Arms Color: Black Magnification: 1 x Objective Lens Diameter: 24 mm Reticle: 3 MOA Green Dot Illumination Type: LED Illumination Color: Red Battery Type: Lithium Metal CR2032 Weight: 0.98 oz Red Dot Sights-Footprint: RMSc Package Contents: Primary Arms Classic Series 1x24mm Micro Reflex Red Dot Sight Battery Primary Arms 810049: Classic Series 1x24mm Micro Reflex Red Dot Sight 3 MOA Green Dot Reticle Black