The 3-12x56 CSX scope not only provides the ultimate performance in low light conditions, but also features the most innovative illumination technology available today. The simple and logical illumination unit controls teh brightness of the reticle from the highest intensity for shooting in bright daylight to the lowest intensity for a shot in the last legal shooting minute. The battery saving digital click mechanism controls the brightness level in the unit. The proprietary digital technology allows teh user to store the preset illumination intensity in a "stand-by" mode in order to save battery life. Another quick, noiseless click and the illumination is recalled at the preset brightness level. The CSX system allows the user to adjust and store the ideal brightness level in the stand-by mode before and during the use as conditiions change.