Set the time and date
- In the Calendar Mode (normal timekeeping), unscrew the crown and pull it out to the second click: the second hand moves to A (a.m.) or P (p.m.).
- Turn the crown to set the hour and minutes. The Dual Time moves along with it.
- Press A, then press B to change the month.
- Turn the crown to change the day.
- Press A and turn the crown to point the second hand at the tens digit of the year.
- Press A and turn the crown to point the second hand at the ones digit of the year.
- Push the crown back in on a time signal, at the top of a minute, and screw it in.
- To take the time from a paired phone instead: with CASIO WATCHES running, press C in the Calendar Mode. The retrograde dial hand moves to R, then to the Bluetooth mark when the watch connects and takes the phone's time.
Good to know
Paired with a phone, the watch sets itself about four times a day while it is in the Calendar Mode; set it by hand when it is not connected to a phone.
Setting the time by hand cancels automatic summer time switching.
The day of the week is set automatically from the date.
With no operation for about two minutes after you pull out the crown, the crown stops working; push it in and pull it out again.
Turning the crown quickly a few times starts fast forward or reverse; turn it the other way or press any button to stop.
From Casio's guide, page 11