Please follow these instructions carefully so as not to damage your timepiece.
Button descriptions:
A: Winding crown to wind, set time, date and day.
B: Recessed pusher to set 24 hour dual time dial.
Setting the time, day and date:
Pull the crown (A) to the first position and turn downward to set the date.
Pull the crown (A) to the second postion to set to set the time.
As you are setting the time, the day of the week will change with every 24 hour revolution of the main time.
Once the time is set push the crown back in and wind the watch. As you wind the watch the power reserve indicator will increase from the left to the right.
Setting the 24 hour dual time dial:
Push the corrector (B) with the push pin provided with your chronometer timepiece,
to adjust the 24 hour dual time dial.