Feature A Flexible Targeting: Dual Reticle Options, 2 MOA Dot and Dot with Circle & Crosshair, Adapt to Diverse Shooting Scenarios A Smart Power Management: Motion Sensor Automatically Powers On/Off, No Worry About Forgetting to Switch Off the Sight A Wider Field of View: 30mm Objective Lens Provides a Large and Forgiving Sight Picture for Easier Target Acquisition A Clear Visibility Anytime: 11 Brightness Levels Ensure the Red Reticle Remains Clear and Visible in All Lighting Conditions A Rapid Mounting: Quick Release Picatinny System Enables Fast, Secure Installation and Maximum Shooting Versatility Specification Magnification: N/A Objective Lens Dia.: 30mm Optics Coating: Multi-coated Eye Relief: Free Length: 110mm / 4.3 inch Height: 38mm 1.5in from bottom to dot center Weight: 270g / 9.5 ounce Click Value: 1MOA Dot Size: 3MOA Elevation Range: 60MOA Windage Range: 60MOA Parallax: