I love the Casio A168.  I have owned three of them over the past 20 years or so.  My first one's battery ran out after 10 years of use.  I tried to replace the battery but I killed the watch trying to do it.  I immediately got my second one and it has been going on for over 8 years and is STILL running.  I had to replace it because the mode button doesn't work any more.  This third one feels much lighter than my previous watch and the aluminum band is not as substantial or shiny as my previous steel one.
Still, nearly a decade of service out of each watch, a stopwatch mode, alarms, AND it has been my companion for most of my adult life!  No need to memorize the modes of a new watch.  What other device can you buy today that you can say that?  I hope Casio keeps making this watch forever!