Bsa handgun scope 2x20mm dual-x black matte Magnification: 2XObj. Lens Diameter: 20mmExit Pupil Range: 10mmField of View @ 100 yards: 25Optimum Eye Relief:11-20 in.Parallax Setting:50 yardsClick Adjustment Value: 1/2Adjustment Range: 45-45Weight:7.5 oz.Features:-1" tube-Long eye relief-Solid one-piece tube Other Features: Turrets are 1 moa click, dust covers, parallax is set for 50 yards, limited one year warranty