Sytong HT-77 Night Vision Scope is a light weight rear mounted night vision addon. The Gyrsocope lets you know your shooting angle and cant, while the Rangefinder lets you know the distance to the target. It allows you to quickly and easily convert your day scope into a state of the art night vision rifle scope for close and long range hunting day or night. Magnification 4-14x, Rangefinder 5-1000m, Video 1920×1080 @ 30FPS