Feature A 25.4mm 1" Monotube Made of 6063 T6, Second Focal Plane Scope, Fully Multi Coated A 1/8 MOA Capped Adjustment, 35MOA Range, Objective Lens Parallax Min from 25 Yds A 3.6" 91mm Eye Relief, R14 Ranging Reticle, True 4x Zoom and 40x Magnification Reticle Specification A Magnification: 10-40x A Objective Lens Dia: 50mm A Ocular Lens Dia.: 38mm / 1.5" A Ocular Lens Length: 67mm / 2.6" A Exit Pupil: 5-1.25mm A Optics Coating: Fully-multi coat A Field of View: 9.42-2.62 feet @100 yards A Eye Relief: 92mm / 3.6" A Tube Dia: 25.4mm (1") A Click Value: 1/8 MOA A Adjustment Range: 35MOA A Side Focus: 25 Yds to infinite A Reticle: R14 Ranging A Length: 420mm / 16.5" A Weight: 610g / 21.5oz A Finish: Black matte A Distance between objective lens part and middle turret: 90mm (3.5 inch) A Length of middle turret part: 35mm (1.4 inch) A Distance between middle turret part to power ring: 56mm (2.2 inch) A Shock tested to 750g, water resistant IPX4, fog proof A Fully nitrogen purged to eliminate any fogging of the lenses internally A 60 clicks per round with capped adjustment A High quality 6063 T6 aircraft grade aluminum alloy A Focus mark: 25, 50, 75, 100, 200, 300 and infinite A Diopter compensation from fast-focus eyepiece (+2 to -2) A Including items: lens cap, instruction and cleaning cloth