First time nv buyer - AGM Global Vision Comanche-22 Medium Range Night Vision Clip-On Systems

This is my first step into night vision. I plan on using this for coyote hunting. So far I have only been able to look through this with a scope at night, but it is amazing how good everything is. Very clear picture. I am glad I spent a little extra to get the white phosphor. Very happy with how this mounts up in front of my scopes on the ARs I have. The focus knob isn't the best feeling thing, but after working it a bit it seems to have improved. Hasn't been the easiest to focus but I am new to it. So far I am very pleased.