Tubeless design with 33mm reflex lens aperture provides a wide field of view. Anti-glare reflective coated lens that gives good optical clarity.Constructed by aluminum alloy with anodized matte black processing. Multi-Reticle (4 patterns) or Variable Dot (4 different sizes) are installed.Parallax corrected and unlimited eye-relief. Allen head screw type windage and elevation click adjustments, with locking screw.Build-in mount (integrated rail) for standard bases, no need to rezero when remounting the dismounted sight. Very lightweight, waterproof and shockproof.Low power consumption for long battery life. Suitable for rapid-firing or shooting of moving targets besides normal shooting.