Gamo 3-9x40mm AO Airgun Scope: * Magnification: 3-9x * Objective lens diameter: 50" * Coating: fully multi coated * Duplex floating reticle * Exit pupil range: 16.6 - 5.5 * Eye relief: 3.8" * Field of view at 100 yds: 34/11.6 * Diopter compensation: 2/+2 * Twilight factor: 12.25-21.21 * Max elevation/windage (ft/100 yds): 30/30 * Tube diameter: 24.4/1 * Approximate length: 12.6" * Imported * 1-year manufacturer"s warranty * Model# 6212039X40AOCP