Set the time and date
- In the Calendar Mode, pull the crown 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 minute hands.
- Press A, then press B to change the month and turn the crown to change the day.
- Press A and turn the crown to set the tens digit of the year.
- Press A and turn the crown to set the ones digit of the year.
- Push the crown back in on a time signal at the top of a minute.
Good to know
From any other mode, hold A for about two seconds to go to the Calendar Mode.
Paired with a phone running CASIO WATCHES, the watch corrects its time four times a day, at around 12:30 a.m., 6:30 a.m., 12:30 p.m. and 6:30 p.m.; setting it by hand is for when it is not connected to a phone.
To take the time from a paired phone now, press C: the second hand moves to R, then to C, and the time is synchronized.
Setting the time by hand on the watch cancels the automatic switching between standard time and summer time. Summer time and the Home City are set with the CASIO WATCHES app.
The day of the week follows the date by itself.
The Dual Time on the small dial moves along with the time; crown operation is disabled while its hands are moving.
To set the Dual Time, pull the crown out to the first click (the second hand moves to 12 o'clock), turn it to set the Dual Time in 15-minute steps, then push it back in.
Hold B for about three seconds to swap the current location time and the Dual Time.
Turning the crown quickly several times moves the hands fast; turn it the other way or press any button to stop them.
The crown screws down: unscrew it (towards you) before pulling it out, and screw it back in as you push it in, or the watch may lose water resistance.
From Casio's guide, page 11