NightStar PR22 Waterproof Long Life Battery Red Dot Black. It is designed for day and night use. These Red Dot Sights from NIGHTSTAR have easy to use power and illumination controls on the left side so you can make adjustments without changing your sighting position.NIGHTSTAR PR22 Red Dot Sights can be mounted exceptionally low so they are a great choice for handguns. Specifications for NightStar PR22 Waterproof Long Life Battery Red Dot: Manufacturer: NightStar Color: Black Finish: Black Matte Fabric/Material: Aluminum Magnification: 1 x Objective Lens Diameter: 22 mm Objective Window Size: 22 mm Reticle: 2MOA Dot Illumination Type: LED Illumination Color: Green Brightness Settings: 10 Eye Relief: Unlimited Adjustment Click Value: 1/2 MOA Emitter Type: Open Parallax: 33 yds Lens Material: Glass Optical Coating: FMC Battery Type: CR1632 Battery Quantity: 1 Water Resistance Level: IPX-7 Shockproof: Yes Gun Make: Universal Length: 45.3 mm Width: 34 mm Height: 37.2 mm Weight: 66 g Included Accessories: Wrench Condition: New Package Type: Box Lens Finish: Coated Brightness Index: Yes Quantity: 1 Switch Type: Button Red Dot Sights-Footprint: Not Applicable Mount Type: Picatinny Gun Type: Pistol Rifle Gun Rail: Picatinny Features of NightStar PR22 Waterproof Long Life Battery Red Dot Up to 50000 hour battery life Side loading battery box RMR compatible Green 60moa Circle with 2moa dot Reticle Brightness 10 level & 2 Night Vision Compatible Setting Package Contents: NightStar PR22 Waterproof Long Life Battery Red Dot NightStar NS15248: PR22 Waterproof Long Life Battery Red Dot Black