The Kahles CSX 3-12x56 riflescope with an illuminated 4-Dot reticle features Kahles AMV coatings for nearly loss free transmission, digital stageless control for day and night lighting, robust etched glass reticle in second plane does not change with increased magnification, a spare battery is located in the windage turret cap, CSX digital technology has a battery life of up to 500 hours, precise adjustment mechanism for repeatability, and a high-grade durable housing.