Vortex StrikeFire II Red/Green Dot Sight Red dot optic Dot size: 4 MOA Color: Red/Green Magnification: 1X Eye relief: Unlimited Battery: CR2 Battery runtime: Up to 50,000 hours 11 Brightness settings Max windage adjustment: 100 MOA Max elevation adjustment: 100 MOA Click value: 1/2 MOA Parallax free Length: 5.6" Weight: 12.8 ounces Nitrogen purged Fully multi-coated lenses Includes: Cantilever ring mount, T-15 Torx wrench, CR2 battery, flip cap covers VIP Lifetime Warranty