I owned one of these in the 80's with a Japanese movement and it ran smoothly without repair during the heavy and hard use of an active water sports enthusiast in his late teens and twenties.  It dove, skied, sailed and stormed many beaches never failing me.  I made the mistake of switching bands to a metal one and finally lost my old friend playing football in a beach in Hawaii.  (I am sure it is still running somewhere in the depths of the pacific ocean).  I made do with other watches for several years but finally decided to buy another one 5 years ago.  This one has an automatic movement from Malaysia.  It is currently on my wrist and so far it has never broken and I perceive no inaccuracy in its timekeeping.  These days I am perhaps not as rough as I used to be on this one but I still sail and do a lot of water activities for which I am glad to have "a cousin" of my trusty old friend with me.