Barska 25-75x75 Straight-Body Porro BK7 Spotting Scope Green w/ Tripod. The Barska Colorado Scope features a powerful zoom magnification range that runs from from 25x to 75x power with a straight-body design for head-on viewing. The massive 90mm ocular lens ensures that you'll get a vivid and bright image every time. Barska CO10998 has a blued outer lens and fully coated lenses throughout. A flip-down lens cover keeps the objective lens protected when the Barska scope is not in use. This affordable spotting scope is ideal for long-distance observation and shooting. Specifications for Barska CO10998 Colorado Spotting Scope: Magnification: 25-75x Objective Lens Diameter: 75 Prism System: Porro Prism Coating: BK7 Eyepiece System: Straight Eyepiece Coating: Blue Lens Coating: FC Lens Color: Blue Field of view at1000yds/meters: 92/30-42/14 at 1000 yds/meters Field of view ( degree): 1.75-0.8 Eye Relief (mm): 13-11 Exit Pupil (mm): 3-1 Features of Barska 25-75x75 Spotting Scope w/ Tripod: Powerful zoom magnification range that runs from 25x to 75x power with a straight-body design for head-on viewing The large 75mm objective lens maximizes light transmission so that images are bright and clear even in low light conditions Magnification: 25-75x Objective Lens Diameter: 75mm Prism System: Porro Eyepiece System: Straight Lens Coating: Fully Coated Field of view at1000yds/meters: 92/30-42/14 Field of view (Degree): 1.75-0.8 Eye Relief: 13-11mm Exit Pupil: 3-1mm Package Contents: Barska 25-75x75 Straight-body Spotting Scope w/ Tripod CO10998 Tripod Carrying case Barska 25-75x75 Straight-Body Porro BK7 Spotting Scope Green w/ Tripod CO10998