I was looking for a night vision monocular that would not have me spending all of my hard earned money. After reading numerous reviews on different sites I settled on the Armasight Spark Core. Easy to use and an efficient piece of equipment, it is a Gen1 night vision unit. I have read that some individuals have felt that this unit is a bit overpriced but after having tried some other units for less in the Gen1 arena, I'm sticking with the Spark Core. The other advantage is the ability to add components such as the External IR, 3X Magnifier, and the Headset if one chooses as funds or interest allows.