I've bought this watch at least 3 times over the past 8 years.  The controls make sense and always seem to work, the case is really water-tight and shock proof; I'm happy they put a 10-year battery in them now.  My only complaints: the "crystal" scratches easily and the strap is annoying - if you trim it to fit your wrist, it comes undone.  If you don't trim it, the stiff end catches on things.  Small price to pay for a seriously inexpensive, fully functional watch that survives just about everything.  I'll buy another when this one's battery wears out!