Side Focus Parallax Adjustment Lenses by legendary German glass specialist SCHOTT AG 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 & precise reticle movements of 1/4 MOA, zero resettable Long four inch plus eye relief Rubber cushioned fast-focus eyepiece Smooth operating soft-touch rubber variable power ring