WHAT DOES HEAD MOUNTED NIGHT VISION MONOCULAR MEAN?

How can I concentration although utilizing the Prowl? The Prowl has 2 target controls, a diopter and also a wheel at the entrance in the gadget. Use the focus wheel within the entrance to deliver the monitor into target and make use of the diopter to help your eye see it as Evidently as you can. You might also need to make use of the diopter to ens