Take your competition shooting to the next level with the Vortex® Defender-XL Red Dot Sight. Featuring a large viewing window with edge-to-edge clarity, this Vortex sight makes it easy to transition between targets. The bright red dot is easy to see and is ideal for competitive and recreational shooters, plus this sight is protected by Vortex's exclusive ShockShield technology. DeltaPoint Pro footprint. Powered by a CR2032 battery that provides up to 25,000 hours of runtime. With 120 MOA of total elevation and 115 MOA windage adjustments in 1-MOA increments, this sight is more than capable of handling anything you throw at it. Gain the competitive edge in your next match with the Vortex Defender-XL Red Dot Sight!