The bezel sets the hands. On the dial is a red spot in a window. When the red spot shows, the watch is in the working phase. Turn the bezel in the direction you want the hands to go and the spot disappears, after you have set the hands, you the rotate the bezel in the opposite direction until the spot shows again. John Harwood developed this method because dust used to enter watches via the winding stem. He hoped to reduce the dust with this method.
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