The Primary Arms SLx Advanced Gen II Microdot Sight is lightweight and compact, creating a highly portable and lightweight optic for any application, including self-defense and breaching situations. These Red Dot Sights from Primary Arms use fully multi-coated ARD nitride lenses to ensure this red dot optic is as efficient as possible. On the top of the Primary Arms SLx Advanced Gen II Waterproof Red Dot Sight, you'll find 11 push button illumination settings for the daylight bright setting to 2 for night vision compatibility. It has a 50,000 hour battery life, making this a highly efficient optic that will last a very long time. Plus, the parallax-free design ensures you always get your shot and not shift focus due to parallax variations. Pick up the Primary Arms SLx Advanced Gen II Red Dot Sight w/ AutoLive Activation for a lightweight optic that will bring you deadly accurate shots, every time. Specifications for Primary Arms SLx Advanced Push Button Microdot 1x20mm 2 MOA Red Dot Sight: Manufacturer: Primary Arms Color: Black Finish: Hardcoat Anodized Fabric/Material: Aluminum Magnification: 1 x Objective Lens Diameter: 20 mm Objective Window Size: 20 mm Reticle: 2 MOA Dot Illumination Color: Red Brightness Settings: 12 Adjustment Type: MOA Adjustment Click Value: 0.5 MOA Emitter Type: Enclosed Battery Type: Lithium Battery Quantity: 1 Battery Life: 50000 hours Weather Resistance: Dustproof Water Resistance Level: IP67 Shockproof: Yes Fogproof: Yes Gun Make: AR Platform Gun Model: AR-15 Length: 2.35 in Weight: 3.8 oz Condition: New Package Type: Box Magnification Type: Fixed Quantity: 1 Red Dot Sights-Footprint: Not Applicable Mount Type: Picatinny Attachment Type: Picatinny Features of Primary Arms SLx Advanced Gen II Push Button Microdot Red Dot Sight AutoLiveTM red dot illumination 50,0000 hour battery life Compatible with industry standard micro red dot bases 11 push button illumination settings from daylight bright to 2 for night vision use Super bright high efficiency LED Integrated turret adjustment tab on removable turret caps to adjust windage and elevation Clean sight picture with almost no feedback or reflection even at the highest brightness settings Zero parallax lens ARD accommodations Fully nitrogen purged, IP67 waterproof and dust proof Hardcoat anodized Lifetime warranty Package Contents: Primary Arms SLx Advanced Push Button Microdot Red Dot Sight