Be careful when buying on Amazon

I have now a fairly large collection of reading glasses and a few failures are the Sunoptic R21 (which I have in several colors) definitely the best.
They look chic, the glasses are very sharp and with a height of approximately 3.6 cm is not as narrow as the models typically available in drug stores, the bars are stable, but flexible enough to allow them to sit neither too loose nor too tight ,
The durability I would also assess as excellent; although I'm not careful Bypass with eyeglasses, has so far not yet broken, warped, bent or scratched.
Definitive buy recommendation!
Another note: Amazon sold these glasses, regardless of color, as "reading glasses in transparent gray" - my other glasses corresponds to the delivered color each the product pictures, not the description. In this case, me a copy was delivered, that neither the designation is in accordance with gray still amber shown, but very dark brown .... Since Amazon has not responded to my respective twice Note since the beginning of January (or possibly as promised by such before "checks"), one is here apparently delivered to chance. The spectacle itself, I prefer it but from no star.