Technical Specs Magnification 2-8x Effective Lens Diameter 2x: 32.5mm 8X: 42mm Exit Pupil Diameter 2x: 16.3mm 8x: 5.3mm Twilight Factors 2x: 5.7 8x: 18.3 Field of View at 100m 2x: 5.7 8x: 8.3 Objective Viewing Angle 2x: 9.1 deg. 8x: 2.8 deg. Diopter Adjustment Range +2 | -3 dpt Eye Relief 90mm Size of illuminated dot at 100m 1.20cm at max. magnification Parallax-free 100m Square Adjustment range at 100m 160cm Adjustment per click at 100m 1cm Centre tube diameter 30mm Eyepiece tube diameter 42mm Objective tube diameter 48mm Coating LotuTec Reticle Illuminated Nitrogen filling Yes Water resistance 400mbar Functional temperature range -25 to +50 deg. C / 77 to 122 deg. F Length 302mm / 11.88" Weight 18.34oz / 520g