My wife bought me this watch from a Jeweler (Think "Every Kiss starts with a K") and it stopped running at one month old.  They replaced the battery.  This one stopped running at 3 months.  They replaced the battery.  It stopped running at 9 months.  They replaced the battery.  It's been going for 3 months now but may stop anytime!  One "expert" said it is probably something with the internals that are wearing the batteries down so fast.  Also, be aware that all during these times, especially as the dead battery dates approached, it lost time and was often many minutes away from the correct time.  I am fairly easy going so I just wore it with the wrong time to make my wife feel good because it's out of warranty now.  Like Dad always said, "you get what you pay for son!"  May not ALWAYS be true but often it is...