Small, light (benefit of plastic), very clear optics and it has 3 powers instantly available; I use this feature every hour at work. Start a lower level of "zoom" and then "zoom" in.
folds into it's own pocket housing and stays remarkably clean.
I use this gadget so much I do believe we are going to get a second one here at work. They are used for scrutinizing negative film based images, and examining very small milling instruments.
This is the best hand held magnifier I personally experienced, we are budgeting for another its so indispensable.
Pros: 3 powers easy to adjust, very clear optics, portable, rugged
Cons: It costs more than most, you'd have to get use to plastic
This review was written in the old system and had content requirements that are different than reviews written today.