Set the time and date
- In the Timekeeping Mode, hold A for about two seconds: SET shows, then the Home Time City name.
- Press D six times until the seconds flash.
- Press E to reset the seconds to 00.
- Press D: the hour flashes. Press B or E to change it.
- Press D to step through hour, minute, year, month, day and seconds; change each with B or E.
- Press A twice to exit the setting screen.
- To switch between 12-hour and 24-hour format: hold A for about two seconds, press D four times until 12H or 24H flashes, press E to toggle, then press A twice.
- To take the time from a paired phone now: with the CASIO WATCH+ app open, hold C for about 0.5 seconds until the second hand points to R.
Good to know
While connected to a phone, the watch adjusts its date and time to the phone; the app can also schedule an auto adjust time each day.
If the seconds are between 30 and 59 when you press E, one minute is added.
In 12-hour format, P shows for p.m. times.
From Casio's guide, page 10