How am i able to emphasis whilst utilizing the Prowl? The Prowl has 2 concentrate controls, a diopter and a wheel at the entrance of your unit. Use the main target wheel within the entrance to convey the display into target and use the diopter to aid your eye see https://monocular-with-night-visi05049.theobloggers.com/34213832/the-best-side-of-night-vision-monocular