* Size and weight is just perfect; not too heavy/light nor too large/small.
* Keeps time just fine.  Please keep in mind I do not wear all the time so I can't say it does for long periods of time (days, for instance).
* Fallow the winding instructions.  I stayed in the middle of what is recommended.  Lasted me a whole day.
* I love its vintage design. One can see its mechanism from both the front (when open) and the back sides. I personally love the back side better.
* It is not shiny. The mere fact that you are wearing a pocket watch is attention-magnet enough.
* Chain is long enough and perfectly matches the watch's shell.

CONS -
* I am a little troubled with the fact that the 'glass' is NOT glass, but PLASTIC and dust and small particles seem to adhere to it.