The Do-It-All Micro Red Dot. Handguns. Shotguns. Offset on a carbine. Whether running drills at the range or holding the line during rigorous duty use, the Defender-ST is ready when and wherever you are. Rugged and reliable? Its a given. Large sight window? Absolutely. Motion-activation and a dot with adjustable brightness deliver superior target acquisition, adaptability in all lighting conditions, and faster follow-up shots. Experience what shooters mean when they discuss the ideal, all-round red dot. With the Defender-ST, you're not just range-ready, but armored for the toughness and adaptability your world demands. Specifications for Vortex Defender-ST 1x23mm Reflex Micro Green Dot Sight: Manufacturer: Vortex Color: Black Magnification: 1 x Objective Lens Diameter: 23 mm Reticle: 3 MOA Illumination Color: Green Eye Relief: Unlimited Adjustment Click Value: 1 MOA Battery Type: Lithium Metal, CR2032 Weight: 1.48 oz Condition: New Red Dot Sights-Footprint: Deltapoint Pro Features of Vortex Defender-ST 1x Reflex Micro Green Dot Sight Bright Green Dot Large Viewing Window ShockShield Polymer Insert Fast-Rack Texturing Motion Activation With 10 minute Auto-Shutoff Button Lockout Top Mount Battery 10 Daylight Bright Brightness Settings Night-Vision Compatibility Parallax Free Unlimited Eye Relief Low-Glare Matte Black Anodized Single-Piece Chassis Waterproof Fogproof Shockproof Package Contents: Vortex Defender-ST 1x Reflex Micro Green Dot Sight Picatinny Mount Custom Tool Most Common Mounting Screw Sets Lens Cloth CR2032 Battery Rubber Cover Glock MOS Plate