I own several Invicta watches with automatic movements and have no difficulty with the watch self winding as the result of normal wear and use.  This watch however constantly stops....BEWARE....I've found it seemingly will not self wind and stay wound with normal wear and movement....I have to shake my hand/wrist for a few seconds every few hours for the watch to keep running. I would NOT recommend this watch because it stops running at very inconvenient times and it should also not require such vigorous movement to keep wound with an automatic movement.