After reading a few reviews, I decided to by this winder.  It was relatively inexpensive and appeared to get the job done.  I have used this for a while now, and I can say that this definitely works.  The only issue that I have is that it does make a slight sound.  I have another winder that is completely quiet.  However, that is not the case with this one.

I use this winder to wind my Invicta watches.  You may seem some low ratings where people say that this does not wind their watches.  I think that those people do not understand automatic movements.  It is typically true that a watch can be wound in any direction (clockwise or counterclockwise).  However, some watches can only be wound in one direction. I learned this when a bought another winder for my Invicta.  Certain models will only wind in one direction. In my case, it would only wind when it was being rotated counterclockwise.  Once I looked at the open face on the back of the watch and paid attention to the arrow on the winder, I realized this.  So, when you get this winder, if it doesn't wind in one direction, you should have it spin in the other direction.  It worked for me with my Invicta, so I'm sure it will work for you.
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September 2013 Update
So, after 3 1/2 years of use, this winder has stopped working.  I unscrewed it and saw that one of the winding bands broke.  I tried fixing it, but there was no success.  Also, this is a very noisy winder.  It does not have a snug fit, so it makes quite a bit of noise as it turns.  That flaw coupled with the cheap construction makes this a questionable investment.  This lasted for 3 1/2 years.  That sounds great.  But you probably want a winder that lasts many more years.  I can still recommend this winder, but I'm surprised at how cheaply it was made.  Then again, it did last 3 1/2 years.  Oh well!