These work very well and are a great entry level NV item. At 1/2 to 1/3 the cost of Gen2 or 3, they are not as clear or sensitive, but for introductory use, they work very well. The built in illuminator isn't all that powerful, but for short range work it is adequate. An auxiliary 850nm illuminator is available from the manufacturer. Heavy and solid, and very well made. Good value for the money as long as you don't expect Gen2 or 3 performance at this price.
Pros: Good for entry level NV
Cons: Heavier than I expected.
This review was written in the old system and had content requirements that are different than reviews written today.