Tough, adaptable, ready for anything the Defender-ST Enclosed Solar Micro Red Dot gives you a no-quit edge on pistols, shotguns, and carbines. Its ultra-rugged, fully enclosed design protects the emitter against impact and the elements, keeping you on target in any condition. Battery and solar power keep it running as long as you do, while multi-reticle customization let you quickly adjust and lock on targets in any light day or night across any platform. Specifications for Vortex Defender-ST Enclosed Solar Micro 1x22.5mm Prismatic Red Dot Sight: Manufacturer: Vortex Color: Black Finish: Matte Black Anodized Fabric/Material: 7075-T6 Aluminum Magnification: 1 x Objective Lens Diameter: 22.5 mm Reticle: 3 MOA Dot Illumination Type: LED Illumination Color: Red Brightness Settings: 10 Eye Relief: Unlimited Adjustment Type: MOA Adjustment Click Value: 1 MOA Emitter Type: Enclosed Parallax: Parallax Free Optical Coating: Fully Multi-Coated Battery Type: CR2032 Weather Resistance: Yes Water Resistance Level: Water Resistant Shockproof: Yes Fogproof: Yes Length: 1.83 in Weight: 1.48 oz Red Dot Sights-Footprint: Deltapoint Pro Features of Vortex Defender-ST Enclosed Solar Micro 1x22.5mm Prismatic Red Dot Sight Enclosed Aluminum Housing Multi-Reticle Solar w/ Auto D-Tec Technology Large Viewing Window Deltapoint Pro Footprint Aspherical Lens Motion Activation w/ 10 Minute Auto-Shutoff Button Lockout Side Load Battery Package Contents: Vortex Defender-ST Enclosed Solar Micro 1x22.5mm Prismatic Red Dot Sight Picatinny Mount Custom Tool Rubber Cover Most Common Mounting Screw Sets CR2032 Battery Lens Cloth Glock MOS Plate Extended Torx T-10 Bit