The utg 3x magnifier with a flip-to-side qd mount for quick transition between 1x and 3x image.Features a broadband multi-coated lens to provide crystal clear image, wide field of view, adjustable windage and elevation, adjustable eyepiece for easy dioptric correction and a patented quick-detach lever lock mounting baseMagnification: 3xObjective: 37mmField Of View: 45 ft @ 100 ydsEye Relief: 2.0"/50.8mmTube Diameter: 44mmLength: 4.09"/013.89 mmWeight: 11.80 oz/335.1 gFinish: Black Hardcoat AnodizedAdjustment Size: Friction AdjustedProofs: Weather/Fog ProofOptic Coating: Broadband Emerald Multi-CoatedWindage Elevation: Adjustable