Inexpensive, but not worth it
I expected a little more from this product. If you want to examine something really small, like one or two words at a time on a printed page, it's OK. Anything more and it doesn't work so well. The lenses are about the size of a quarter, and the "sweet spot" is smaller than that. The dual lens action isn't particularly effective. You can see 1 or 2 letters clearly.
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