This is a nice watch that I purchased for everyday/beater wear.  Synchs up nicely with the atomif clock and battery came fully charged and has maintained the charge (I have 3 other Casio solar/ atomic watches and have never had a problem with them synching or maintaining a charge).  Although the function buttons are a little stiff, they are still easy to operate.  While some have complained that the raised bumps on the underside are rough and uncomfortable, I have not found that to be the case.  The only reason for the downgrade to 4 stars is because the band feels fairly hard/brittle, and I'm not optimistic about its longetivity, and Casio replacement bands are, in my opinion, overpriced.  Other than that, I'm very happy with the watch.