RioRand Red and Green Reflex Sight with 4 Reticles 4 Seperate ReticlesRail:22mm7 Brightness Settings.Tubeless Open Reflex Design. 4 reticle patterns offer unlimited eye-relief and corrected parallax, Built-in picatinny mount base for easy sight remounting Excellent choice for rapid-firing and moving targets Allen head screw type windage and elevation click adjustments with locking screw Package includes: 1X RioRand RED DOT SCOPE, 1X Cleaning Cloth, 1X CR2032 Battery ,1X Mounting tool ,1X Product Instruction