NcStar 3-12X50E Red Illuminated Scope Small Cross/Green Lens/Ring (SUS31250G) Multi coated lenses - Air gun compatible - One piece 30mm anodized aluminum tube - Quick focus eyepiece Reticles illuminate in Red with multiple brightness settings - Includes 30mm weaver style rings, lens caps, extra battery, and soft carry case MAGNIFICATION: 3X-12X - TUBE DIA. 30MM - OBJECTIVE DIA. (MM) 50.00 - FOV (FEET AT 100 YARDS) 33.5-7.4 EYE RELIEF (in) 2.56-3.07 - EXIT PUPIL(MM) 16.7-4.2 - RETICLE: SMALL CROSS - CLICK VALUE : 1/4 M.O.A - EXTERIOR FINISH: MATTE BLACK - LENS COATING: GREEN - INCLUDES: WEAVER STYLE RINGS