I've purchased this watch 3 times.  It is such a good watch that when the previous 2 broke over the years, I bought replacement. The first one's band broke as others have stated...this "resin" band doesn't like to bend repeatedly. About 3 years of daily wear snapped the band. My second unit accidentally served as a teething ring for my 10-month old and I think he jammed/cracked one of the face buttons. I took the watch apart to try and fix and ended up tossing it. This is not a G-shock Casio but for $17 it really does it all.  I have a small collection of watches ranging from an expensive Japanese domestic market Seiko Chronograph to a colorful G-Shock Casio but I wear this lightweight, simple watch 99% of the time.  Why 4 stars?  Casio needs to make a more durable band.  It's obviously part of their planned-obsolesence marketing strategy.