This German Engineered ZA 5 2-10x 50mm is a 2x to 10x variable zoom with a 50mm objective lens and comes with a XR-BDC Reticle. This Scope has a versatile magnification range with large objective low light performance. 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.