Vortex Optics SPARC Red Dot Sight - 2 MOA Dot The SPARC sight features a 2 MOA daylight bright Red dot that is quick to spot and paints your target regardless of lighting conditions or background. The dot returns to the last intensity used when powered up. High quality, fully multi-coated lenses offer up a clean, wide field of view. With unlimited Eye relief and parallax free, The sight gets You on target fast. Rear-facing controls offer quick access and are viewable from the shooting position. Waterproof, Fog proof, and shockproof The anodized, aircraft-grade aluminum body is rubber armored and built to handle the most extreme conditions. The sight operates using a AAA Battery and offers up to 300 hours of power at max brightness. After 12 hours. An automatic shutoff prevents accidental Battery rundown.