This 1.5-5x32mm Illuminated Crossbow scope features a speed selector to match any crossbow shooting between 250-450 feet per second. Designed to provide aim points at exact 10-yard intervals from 20-100 yards. Choose from red or green illuminated reticles for low light conditions, with simple twist on/off operation and illumination intensity control. This scope is designed, engineered and built to offer years of trouble-free service. When used properly, it will deliver outstanding performance in the field, while increasing your level of shooting satisfaction.