The D-490 is a nightvision scope. Applications Police / Law enforcement Hunting / Night surveilance Patrol / Rescue / Search Night Photo / Video Features Special high-contrast night optics 4x, 6x magnification Gen. II+, III, XR-5 Shockproof even with heavy recoil (.375 H&H, .50 cal.) Automatic brightness control Manual gain control (EGAC) Long eye relief Precision MIL-DOT reticle with adjustable brightness Precision windage/elevation adjustment (10mm/100m or 1/4 MOA) Powerful build-in IR illuminator (75 mW) Wide range of mounts Waterproof Light weight |