Casio module 5208

1. In the Timekeeping Mode, hold A for about two seconds until ADJ appears and the city code flashes.
2. Press C to step through the settings: city code, DST, 12/24-hour format, seconds, hour, minutes, year, month, day, button tone, light duration, then day-of-week language.
3. On the seconds, press D to reset them to 00.
4. On the hour, minutes, year, month or day, press D to go up and B to go down.
5. On the 12/24-hour format, press D to switch between 12H and 24H.
6. Press A to leave the setting screen.

From Casio's guide, page E-11

1. In the Timekeeping Mode, hold A for about two seconds until ADJ appears.
2. Press C once to reach the DST setting.
3. Press D to switch between ON (summer time) and OFF (standard time).
4. Press A to leave. The DST indicator shows while summer time is on.

From Casio's guide, page E-15

1. In the Timekeeping Mode, hold A for about two seconds until ADJ appears and the city code flashes.
2. Press D to move east or B to move west through the city codes.
3. Press A to leave.

From Casio's guide, page E-11

1. Press C until the Alarm Mode shows.
2. Press D to pick an alarm, AL1 to AL5.
3. Hold A for about two seconds until the hour flashes; this also switches the alarm on.
4. Press D (+) or B (-) to set the hour, press C to move to the minutes, D or B again.
5. Press A to leave.

From Casio's guide, page E-21

1. In the Timekeeping Mode, hold A for about five seconds. Keep holding past ADJ and release when H.SET appears.
2. The hands should go to 12 o'clock and 0:00 flashes.
3. If they are not at 12 o'clock, press D (+) or B (-) to move them there.
4. Press A to return to the Timekeeping Mode.
5. Check that the hands match the digital time; repeat if they do not.

From Casio's guide, page E-42

1. Press B in any mode (except on a setting screen) to light the display.
2. To change the duration: in the Timekeeping Mode hold A until the setting screen appears, then press C ten times.
3. Press D to switch between LT1 (about 1.5 seconds) and LT3 (about 3 seconds).
4. Press A to leave.

From Casio's guide, page E-31

1. In the Timekeeping Mode, hold A for about two seconds until ADJ appears.
2. Press C nine times: the screen shows KEY♪ or MUTE.
3. Press D to switch, then A to leave.

From Casio's guide, page E-45

1. Press C until the Stopwatch Mode shows.
2. Press D to start and D again to stop; D once more resumes.
3. While it runs, press A to freeze a split time (SPL) and A again to release it.
4. When stopped, press A to clear.

From Casio's guide, page E-30