Tasco World Class 4-16x40mm Matte, Mil Dot Riflescope Power/objective lens (mm): 4-16x40mm Field of view (ft at 100Yds/m at 100M): 22-6/7.3-2.4 Exit pupil (mm): 12.5Mm at 4X/2.5Mm at 16X 4 to 16 times magnification x 40mm objective lens VZR reticle SuperCon/Multi-Layered Fully Coated optics 1" diameter matte finish tube Eyebell focus