Handguns. Shotguns. Offset on a carbine. Whether running drills at the range or holding the line during rigorous duty use, the all-purpose Defender-ST delivers the toughness, accuracy, and adaptability your challenging world needs. Product Features Large Hard Coated Aspherical Lens: Large distortion free sight picture. ShockShield Polymer Insert: To protect against hard, daily abuse. Fast-Rack Texturing: Aggressive texturing on face of optic for racking slide off any surface. Motion Activation With 10 minute Auto-Shutoff: Automatically activates with motion while 10 minute auto-shutoff saves battery life. Button Lockout: Prevents accidental brightness adjustment during use or transport. Top Mount Battery: Easy battery change without having to rezero your optic. 10 Daylight Bright Brightness Settings: Daylight bright, illuminated center dot aids in faster center-point acquisition in bright daylight conditions. Night-Vision Compatibility: The lowest 2 settings are night-vision compatible. Parallax Free: All green dot and holographic sights will exhibit some small amount of parallax. Matching current industry practice, this small amount would be considered "parallax free" and will make a negligible difference in performance. Unlimited Eye Relief: Non-critical eye relief for rapid target acquisition. Low-Glare Matte Black Anodized: Corrosion and wear resistant anodization provides low-glare matte surface and helps camouflage the shooter's position. Single-Piece Chassis: Compact and lightweight. Waterproof: O-ring seals prevent moisture, dust and debris from penetrating for reliable performance in all environments. Fogproof: Designed to withstand a wide range of temperatures. Shockproof: Rugged construction withstands recoil and impact. Product Specifications Mounting Footprint: DeltaPoint Pro Dot Size: 3 MOA Dot Color: Bright Green Battery Type: CR2032 Battery Run Time: 25,000 hrs. Magnification: 1x Reticle: 3 MOA Defender Dot Eye Relief: Unlimited Adjustment Graduation: 1 MOA Max Elevation Adjustment: 115 MOA Max Windage Adjustment: 145 MOA Parallax Setting: Parallax Free Length: 1.83" Weight: 1.48 oz.