The 1x20mm Micro model is a perfect no-nonsense sight for your AR-15, shotgun, or rimfire. The 3 MOA dot is quick to acquire in close-quarters, while remaining fine enough to promote pin-point accuracy at extended range. With a 50,000 hour battery life and night-vision compatibility at the lowest two settings, the Micro's red dot will keep working in a variety of conditions. Magnification: 1x Objective Lens Diameter: 20 mm Dot Color: Bright Red Dot Size: 3 MOA Eye Relief: Unlimited Adjustment Graduation: 1 MOA Max Elevation Adjustment: 100 MOA Max Windage Adjustment: 100 MOA Parallax Setting: Parallax Free Dimension (LxWxH): 76x44x53mm Weight: 148g