As others have stated.. this watch is great ...BUT... the back light is terrible!!!  It does not provide enough light to see the time nicely.  I wish Casio would fix this big flaw in their watches. If you have any vision problems, I would not buy this watch or most any Casio.  I like this watch  and will keep it.  I'd love this watch and I'd give 5 stars, if the background light was like a Timex Indiglo.