Our family has had four of these watches now.  I've got one, my daughter has one, and now my 11 year-old son has one.  And the other one still works, but the watch band broke.  That's the only complaint.  There seems to be no possible replacement for the watchband, which is a rubbery, plastic-y stuff. It lasted a couple of years.
 Some people have commented (and it may have been on a different website--I don't remember)  that the instructions that came with this watch were the wrong ones, but that has not happened to us.  It is a great watch for the price.  To me, the button operation seems intuitive, it keeps good time, and has useful features like a stopwatch.