The HG-D2 is the next generation Matte holographic sight from AimShot. With a more rugged body and lens, It"s perfect for high-powered rifles, and durable enough for everyday use. Completely parallax-free with unlimited eye relief. Easily switch between four dot sizes with a flip of a switch. Features a 10 hour battery life. Suitable for rapid firing and tracking moving targets. Easily switch between four dog sizes with a flip of a switch. Lightweight aluminum alloy construction. Its 3.6" long by 2" tall by 1.5" wide and weighs 6.25 oz. 1x 4 Dot reticles. The shaded 34mm flex lens provide a sharp image in all light conditions.