I'm hearing a moderate "click" or "pop" noise when I raise my wrist and the screen comes on.  It's not all the time, only when the watch screen has been idle for at least a minute or so.  It's consistent though, and definitely there.  I have it silenced, I'm not getting any haptic feedback when this happens (I shouldn't), I just hear the pop.  I've searched and don't see anyone else with the same issue.  I've done all kinds of restarts, no difference.  Watch works great otherwise.