Lens Elements: 8 Magnification: 20-42 x Exit pupil: 3.1 - 1.38 mm Field of view: 55-95 ft @ 1000 yds / 1.7° - 1.1° Eye relief: 16 - 17 mm Length approx.: 3.15" (80 mm) Diameter approx: 2.08" (53 mm) Weight: 3.91 oz. (111 g)