SightMark 1x-28mm Volta Solar Red Dot Sight Red 2 MOA Dot 1/2 MOA Black. And forget messing with reticle brightness - an innovative Eclipse Light Management System auto dims and brightens the red dot reticle based on your environment.Features:Reticle: 2 MOA dot Reticle color: Red Magnification (x): 1 Objective lens aperture (mm): 28 Eye relief (in): Unlimited Body material: Aluminum 6061-T6 / plastic IP rating: IP67 waterproof Adjustment value: 1/2 MOA Windage adjustment range: 160 MOA Elevation adjustment range: 120 MOA Dimensions (in): 3.23 x 1.37 x 1.98 Weight (oz): 7.3 Battery type: 2x AAA Battery life (high/low): 800 / 400000 Specifications for SightMark Volta Solar Red Dot Sight: Manufacturer: SightMark Color: Black Magnification: 1 x Objective Lens Diameter: 28 mm Reticle: 2 MOA Dot Illumination Color: Red Adjustment Click Value: 0.5 MOA Battery Type: AAA Battery Quantity: 2 Water Resistance Level: IP67 Length: 3.23 in Width: 1.37 in Height: 1.98 in Weight: 7.3 oz Magnification Type: Fixed Tube Diameter: 28 mm Last Chance: Yes Features of SightMark Volta Solar Red Dot Sight Dual power ability battery or solar power; Up to 400000 hours of battery life; Compact enclosed sight design; Full metal construction; Includes low and cowitness mounts Package Contents: SightMark Volta Solar Red Dot Sight SightMark SM26030: 1x-28mm Volta Solar Red Dot Sight Red 2 MOA Dot 1/2 MOA Black