The Digital Ultra Sight by ATN is designed to be a both eyes open, heads-up, rapid acquisition red dot sight. A must for rapid fire shooting, the Digital Ultra Sight is best used with both eyes open and makes getting on target quick and easy. A revolutionary design lets you choose between five reticle patterns with a simple push of a button. A digital adjustment for brightness and very easy and accurate windage and elevation adjustment make Digital Ultra Sight one of the best red dot sights on the market.