The DRS (Defendu Reflex Sight) is so versatile and effective at close range. Perfect for tactical operations or home defense, the 1x reflex sight offers three reticles calibrated for speed and accuracy at 7, 25 and 50 yards. The C2 reticles-Singe dot, dot/stadia line and dot/stadia lines/close dot. The window size is .96"H x 1.26"W in. Features a 13hr auto shutoff, 2000+ hrs of battery run time, 7 illumination settings and three reticle options. Co-witness with iron sights or use with any multiplier.