──【メーカーカタログより】── Pull out the crown to 1st position, turn up the crown to adjust the minute hands and hour hands. When you push back the crown to normal position, the seconds hand will began to run. Functions Without A Battery, Powers Automatically With The Movement Of Your Arms. If wearing more than 10 hours each days, extra winding up will not be necessary. When the crown in normal position, turn up the crown can winding up the spring.!