Feature A Balanced Precision and Speed: 3 MOA Dot Supports Both Fast Target Acquisition and Accurate Aiming in Diverse Shooting Scenarios A Bright and Versatile Reticle: Versatile Dot in Circle Reticle, with 11 levels Brightness Settings for All Light Condition. A Super Covenient: Package w/ 21mm Weaver Rings & Flip-up Caps inside, Never Need to Spend More Money to Buy Another Rings & Caps Video Specification Magnification: N/A Objective Lens Size: 30mm Exit Pupil : 28mm Eye Relief: Free Optics Coating: Multi coated Field for View : 50&'; @ 100 yards Overall Length: 116mm (4.6 inch) Weight: 137g (4.8 ounce) Click Value: 1MOA Parallax: 1 MOA at 80 yards Dot Intensity: 11 levels by digital control Center Dot Size: 3MOA Elevation Range: 60 MOA Windage Range: 60 MOA Mounting: 21mm weaver Battery:CR2032