Excellent clarity of the triplet glass lens (three lenses in a single shell) is a top feature of this quality loupe, but it also has features that will provide convenience and security. If you need a quality 20x loupe for a reasonable price, this is it. If you've never used a loupe of this power, the viewing distance is very short between the loupe and the eye as well as between the loupe and the object viewed. The center of the loupe is the viewing area.