This latest Sidewinder featuring Hawke H5 optics which boast a stunning ultra-wide field of view, high grade low-dispersion Crown glass with 18 layer lens coatings and a generous eye relief. The precision locking turrets are even more positive than the previous model and the Sidewinder now features a witness window giving you an instant visual guide to your turrets position so you know exactly where you are in relation to your zero. The Half Mil reticle features 0.5 Mil spacing aiming marks and has 6 levels of illumination brightness operated with the left hand outer turret. Instruction Manual And Reticle Booklet. Parallax Down To: 10 Yards.Exit Pupil: 12.5 - 3.1mm. Focal Plane: Second Focal Plane. Windage/Elevation Adjustment Range: 26MRAD (Approximately 90 MOA).