Day-date function

Notes for correct use:

• unscrew the button counterclockwise until it is completely unscrewed, after which it will be easy to pull it out to set the time (all the way out to the right), day and date (half a click between the screwed crown and the position to set the time).
• the date is regulated by an automatic mechanism which clicks between 10 and 2 o'clock, a period of time in which the backward movement of the hands should be avoided.