Turn the crown counterclockwise until the thread loosens; if the crowns are not screwed in, the crown is "automatically" in position 1 (winding position). Before setting the date display, it is recommended to jump the date (turn the hand over 12h to determine whether 12h is noon or night). To do this, pull the crown into position 3.
Set the crown to position 2; the date quickset function can now be activated by turning the crown counterclockwise.
Pull the crown to position 3 to set the time correctly (the second hand stops).
After operation, the crown must be screwed back in (only for screw-down crowns) by pressing it against the case and turning it clockwise until it locks (position 0). Non-screwed crowns only need to be pressed against the case (position 1).