The Vortex Spitfire HD Gen II 3x Prism Scope provides a clear target image with its HD optical system and crisp optical performance in a smaller and lighter design. With 12 illumination settings, you can properly adjust this reticle for any lighting condition, and 2-night vision compatible settings ensure these Prismatic Red Dot Sights are compatible with your favorite night vision devices. This Vortex Optics Spitfire HD Gen II 3x Prism Combat Sight is compact and lightweight, so it can be mounted on a variety of weapons without issue. With a holdover reticle for the most popular 5.56 calibers, you can quickly acquire targets and take them down with peak precision. With this scope, you get the best of both worlds in a compact package. If you have a red dot optic for your rifle, then you need the Vortex Spitfire HD Gen II Red Dot Sight. Specifications for Vortex Spitfire HD Gen II 3x Prism Scope: Manufacturer: Vortex Color: Black Finish: Low-Glare Matte Magnification: 3 x Objective Lens Diameter: 21 mm Objective Window Size: 21 mm Reticle: AR-BDC4 Illumination Type: LED Illumination Color: Red Brightness Settings: 12 Eye Relief: 2.6 in Adjustment Type: MOA Adjustment Click Value: 1 MOA Emitter Type: Enclosed Field of View, Linear: 37.9 ft at 100 yds Field of View, Angle: 37.9 degrees Parallax: 100 yds Optical Coating: Fully Multi-Coated Battery Type: Lithium Ion, CR2032 Battery Quantity: 1 Water Resistance Level: Waterproof Shockproof: Yes Fogproof: Yes Length: 3 in Width: 2 in Height: 1.8 in Weight: 9.3 oz Condition: New Red Dot Sights-Footprint: Not Applicable Adjustment Range: 250 MOA Key Features of Vortex Spitfire HD Gen II 3x Prism Scope HD OPTICAL SYSTEM: Optimized to deliver exceptional resolution and provide outstanding edge-to-edge sharpness and light transmission ULTRA COMPACT AND LIGHTWEIGHT DESIGN: Rugged construction that's still compact, with a lightweight form-factor AR-BDC4 RETICLE: Purpose-built for most popular 5.56 cartridges Features of Vortex Spitfire HD Gen II 3x Prism Scope 12 illumination settings Nitrogen purged 2 nightvision compatible settings Package Contents: Vortex Spitfire HD Gen II 3x Prism Scope Rubber Lens Covers T10 Torx Multi-Tool Multi-Height Mount System - Lower 1/3 Co-Witness &amp Low Mount Lens Cloth CR2032 Battery Vortex VIP Warranty The Vortex VIP warranty is about you, not us. It"s about taking care of you after the sale. VIP stands for a Very Important Promise to you, our customer. We will repair or replace your Vortex product in the event it becomes damaged or defective-at no charge to you. If we cannot repair your product, we will replace it with a product in perfect working order of equal or better physical condition. You see, it doesn"t matter how it happened, whose fault it was, or where you purchased it. You can count on the VIP Warranty for all Vortex Optics Rifle Scopes, prism scopes, red dots, rangefinders, binoculars, spotting scopes, tripods, and monoculars. Unlimited Lifetime Warranty Fully transferable No warranty card to fill out No receipt needed to hang on to If you ever have a problem, no matter the cause, we promise to take care of you Note: The VIP Warranty does not cover loss, theft, deliberate damage or cosmetic damage that does not hinder the performance of the product.