Nc Star SC430BT Series Compact Scope, 4 x 30 mm, Tan/Blue Classic design in small package - Air gun Compatible - fixed power magnification - multi coated lenses - includes lens covers Magnification: 4x - tube dia. 1'' - objective dia. (Mm) 30.00 - fov (feet at 100 yards) 26.2 Eye relief (in) 3.00 - exit pupil(mm) 7.5 Reticle: P4 sniper - click value : 1/4 M.O.A