The K318i means optical and mechanical perfection packed into an ultrashort design. With a precise SKMR3 reticle in 1st focal plane, sharply defined throughout the entire magnification range and the unique Twist Guard windage. Ultrashort and lightweight rifle scope for demanding shooters Absolutely reliable repeat accuracy and precise, clearly defined click mechanism Wide field of view and exceptional high constrast image Innovative Twist Guard windage Parallax wheel integrated into the elevation turret (25m to infinity) Precise illuminated reticle in 1st focal plane Specifications: Magnification: 3.5-18x Eye Relief: 3.62" Field of View: 27.8ft - 5.5ft @ 100 Yards Diopter Compensation: +2.5/-3.5 dpt Impact Correction Per Click: .1 MRAD Tube Diameter: 34mm Length: 12.3" Weight: 33.2oz Focal Plane: 1st Illuminated: Yes Warranty: 10 Years