HEAD MOUNTED NIGHT VISION MONOCULAR - AN OVERVIEW

How can I concentrate whilst using the Prowl? The Prowl has two focus controls, a diopter and also a wheel on the entrance with the unit. Use the main target wheel with the front to deliver the screen into concentration and use the diopter that will help your eye see it as Evidently as feasible. You might also desire to use the diopter so that obje