Up until it stopped working, it seemed to be working fine (keeping time).  One day however, without warning, I noticed that the seconds hand wasn't moving anymore.  I thought that maybe I had forgotten to wind it.  Even after winding (it took only a couple of turns), it still made no movement, and neither could I hear any ticking sound.  It has mysteriously broken.  I don't think I did anything wrong.
Update June 22, 2012:
I sent the broken watch to Sturhling, and they repaired it at no cost to me (I did have to pay for mailing it there).  The watch is working again.  Hopefully, this time I will at least get a year's worth of use.  I should note that when the repaired watch was mailed back to me, it came in a very shiny back Sturhling branded box (a nice touch)!

Updated Nov 2012:  this watch broke again... within a month after it came back from repair.  This  time, the seconds dial broke off from its attachment.  Sigh....  I'm not going to buy this brand again, and will not recommend it.