I bought the Armasight Sirius monocular right after my friend tested it and got fully satisfied with that. We both are hunters, but my friend is more experienced not only in hunting, but in using optics as well. So I always follow his advice when choosing stuff of the kind. After several weeks he told me that hunting even in the most trying weather conditions is much easier now, as the device is not only waterproof, but due to the high-grade lenses and additional features like IR illuminator, it also allows you to see well even in complete darkness.
Besides, as I know it can be used not only by hunters, but by law enforcement professionals or security personal as well, which makes the device quite a versatile.
This review was written in the old system and had content requirements that are different than reviews written today.