Built with durability, accuracy and versatility, EOTech’s Vudu Riflescopes exceed the expectations of the serious precision shooter. First focal-plane optic design delivers split-second target ranging at all magnification levels. Broadband anti-reflection lens coating creates exceptional image illumination, especially during the low-light conditions of dawn and dusk. Push-button reticle illumination ensures your aim is true. Two-hour auto power shut-off conserves battery life. Ultrastrong main tube is crafted from a solid piece of aircraft-grade aluminum and coated with a type-III, anodized, flat-black finish. 30mm main tube on 1-6X24 model and 34mm main tube on 3.5-18X50 model. Windage and elevation adjustments available in both MRAD and MOA. Runs on one CR-2032 battery (included). Backed by manufacturer’s lifetime guarantee.