Utg's circle dot sight with a dual red/green 4 moa target dot with 62 moa circle features 5 brightness settings for diverse environmental backgrounds.Features instant aiming and locking on target, wide field of view, unlimited eye relief and non-reflective emerald coating.Includes integral qd mounting deck and flip-open lens caps.*optional: use 1/2" riser to achieve co-witnessing with iron sights on ar models (utg 1/2" risers sold separately).Battery: CR2032Magnification: 1xObjective: 39.2mmField Of View: 95 ft @ 100 ydsEye Relief: InfinityDot Size: 4 MOA/62 MOATube Diameter: 38mmLength: 3.76"/95.504mmWeight: 8.40/238.1 gFinish: Black Hardcoat AnodizedReticle: 4 MOA/62 MOA Red/Green Dual Illuminated Circle DotAdjustment Size: 0.50 MOAOptic Coating: Emerald Multi-CoatedWindage Elevation: Adjustable