Detail Information: -  Built on True Strength Platform to Offer Durability and Precision Adjustment; Completely Sealed, Shockproof, Fogproof and Rainproof -  Unlimited Eye Relief and Intuitive, Quick-to-Acquire Red/Green T-dot Reticle for Swift Execution of T-Zone and Center Mass Hits -  Premium Zero Lockable and Zero Resettable Target Turrets with Most Consistent, Precise and Reliable 1/2 MOA per Click Adjustment and Zero Hold Capability -  42mm Center Height for 1/3 Co-witness of Front and Rear Iron Sights -  TactEdge Angled Integral Sunshade Reduces Glare Off the Lens While Maintaining Superb Light Transmission Clarity -  Complete with Lens Covers and QD Dual Lever Lock Bidirectional Offset Mount that Frees Up Flat Top Real Estate for Magnifiers, Rear Sights and Other Accessories Magnification: 1X Tube Diameter: 38 mm Objective Diameter: 39mm Field of View @ 100 yards: 85' Eye Relief: Infinity Exit Pupil: 26mm Click Value @100 yards: 1/2" Length: 155mm Weight: 13.1oz Parallax Setting: Infinity Batteries: CR1620 3V   A: 141 mm B: 68 mm C: 15 mm D: 22 mm E: 45 mm F: 28 mm G: 40 mm H: 46 mm I: 14 mm