Update: It lasted less than a year before it broke.  I switched brands and will never own another Invicta watch.  It got to the point that I would look at my watch, and then double check the time on my cell phone.  Ridiculous. Then something inside the watch gave out and the watch would rapidly unwind. (giving a very strange vibration as the weight spun around while it unwound...)

I got this watch the first time from a warehouse store.  I broke the band in a snowboarding incident and had it repaired.  I then broke the crystal and went out and bought a second one. I love this watch, but both of them had the same issues:

On both watches, purchased 2 years apart, I had these exact same issues:
The spring winds out within 12-14 hours.
If the spring winds out, I have to shake and shake the watch to get it revved back up.
Regular use will not catch this watch up if it has wound all the way down. (for me anyways)
When this happens, it runs very erratically until it stays wound for a couple of days.
I end up wearing this watch much more than I want in order to keep it wound and avoid this inconsistency issue.

I love every other aspect of this watch.

But the fact that I have to wear it more than I want, or suffer a day or 2 of very erratic time keeping, knocks 2 stars off my review.

When I have to get another watch, it won't be this one.  I won't go through this again.

Update: It broke again, I bought another brand.  I will never own another Invicta.  What a shame.