Athlon scope talos 3-12×40 sf bdc 600 ir sfp 1″ FEATURES:-Magnification: 3-12-Objective Lens Diameter: 40 mm-Tube Diameter: 25.4 mm-Exit Pupil:13.6-3.4 mm-Eye Relief: 3.82-3.35″-FOV @ 100yds: 34.1-8.9 ft-Length: 12″-Weight: 16.2 oz