I have a problem with a much-loved Bulova Marine Star (c9671132) that's been my daily wearer for about 10 years now.
It worked absolutely fine for years - but it ate batteries...one every 6 months or so. My watch repair guy who replaced my batteries all the time said that Bulova was aware of this problem with their movement, and said they had switched to a new movement a few years back that was much kinder to batteries. I told him to go ahead and replace the old movement and install the new movement - which he did for 50-odd dollars.
I've gotten it back now...and it won't keep running consistently. It will sometimes stop 4 times in a day, and other times it will keep perfect time for 2-3 days. I've taken it back twice now, and the guy can't really find anything wrong. I've left it there for days and he says it never stopped...yet I take it home and it will stop 2 times before I get home...and then run perfectly for days on end. I'm sure he's frustrated, and I'm getting a tad ticked as well.
The watch just needs a very light tap to restart.
I know NOTHING about the machinations of the modern watch - so I figured maybe some WIS out there has heard of something, or can suggest something - that way I have a list of things to ask my watch repair guy (who I'm sure wants to close up shop when he sees me walking down the street)