One Power Readers are just that. One power. There is no adjustment, automatic or otherwise, despite the claim on the packaging that they adjust from .5 to 2.5. The pair I got has a diopter of about 2.5. Also, in the instructions, which say nothing about the adjustment feature, they recommend that you "return them to the microfiber storage case" when not in use, though no such case came with the glasses.
The glasses are ok so long as I’m viewing something between 8 and 10 inches from my face. Outside that range they are useless.
In short, this product promises a feature it does not have.
Bottom Line: No, I would not recommend this to a friend
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