This German Engineered ZA 5 3-15x50 SF is a 3x to 15x variable zoom with a large 50mm objective lens and comes with a BDC Reticle. Side focus Parallax Adjustment and large objective extends accurate shooting range and the shooting day. Standard features include: Lenses by Schott. Minox M* coating - up to 21 different layers applied to the glass surface to greatly improve light transmission, brightness, contrast, detail and color rendering. Windage and elevation knobs, finger adjustable with positive and precise reticle movements of 1/4 MOA with zero resettable. Long four inch eye relief throughout the entire zoom range. Rubber cushioned fast-focus eyepiece. Smooth operating soft touch rubber variable power ring.