Tubeless design with 33mm reflex lens aperture provides a wide field of view, suitable for rapid-firing or moving target shooting. Multi-Reticle (4 patterns) are installed and can be changed quickly and easily by turning the reticle knob however the point of impact never changes. Parallax corrected with unlimited eye-relief. Allen head screw type windage and elevation adjustments with 1 MOA per click, with locking screw. Built-in mount (integrated rail) for standard bases, no need to re-zero when remounting the sight. Lightweight, waterproof and shockproof. Low power consumption for long battery life.