I'm very satisfied with the work of Prime with 5x magnification and would recommend it! Before buying it I was not, actually, so sure that the device will be of good quality, as the price is not high, but I was wrong. Prime 5x provides good magnification in combination with decent resolution. Of course, the Gen1 cannot provide the perfectly clear image but with my device I can observe up to 100 meters that is great result! Built-in IR helps me to read the map in complete darkness so I'm glad I have Prime 5x!
This review was written in the old system and had content requirements that are different than reviews written today.