Casio module 5425

1. In the Timekeeping Mode, hold A for about three seconds until the city code flashes in the upper display.
2. Press D (east) or B (west) to choose your Home City first.
3. Press C to step through the settings: city code, DST, 12/24-hour format, seconds, hour, minutes, year, month, day, then light duration.
4. On the DST, press D to switch between on and OFF; on the 12/24-hour format, press D to switch between 12H and 24H.
5. On the seconds, press D to reset them to 00.
6. On the hour, minutes, year, month or day, press D to go up and B to go down.
7. Press A to leave the setting screen. The hands follow the digital time by themselves.

From Casio's guide, page E-9

1. In the Timekeeping Mode, hold A for about three seconds until the city code flashes.
2. Press C once: the DST setting shows.
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-12

1. In the Timekeeping Mode, hold A for about three seconds until the city code flashes.
2. Press D (east) or B (west) to choose your city code.
3. Press A to leave.

From Casio's guide, page E-9

1. Press C until the Alarm Mode shows (ALM, the last mode before the Timekeeping Mode).
2. Press D to step through AL1, AL2, AL3, AL4, SNZ (the snooze alarm) and SIG (the hourly signal) until the alarm you want shows.
3. Hold A for about three seconds until the hour flashes; this also switches the alarm on.
4. Press D to go up and B to go down; press C to move between the hour and the minutes.
5. Press A to leave.
6. To switch an alarm or the hourly signal on or off, select it with D in the Alarm Mode and press A: on or OFF shows.

From Casio's guide, page E-34

1. In the Timekeeping Mode, hold D for about three seconds until Sub flashes in the lower display.
2. The speed hand should point at 50 (9 o'clock); if it does not, press D to move it clockwise until it does, then press C.
3. The hour and minute hands should point at 12 o'clock; if they do not, press D (clockwise) or B (counterclockwise) to move them.
4. Press A to go back to timekeeping: the hour and minute hands move to the current time and the speed hand to 0.

From Casio's guide, page E-42

1. Press B in any mode to light the face.
2. To change the duration: in the Timekeeping Mode hold A until the display flashes, then press C nine times until LT1 or LT3 shows.
3. Press D to switch between 1.5 seconds (LT1) and three seconds (LT3), then A to leave.
4. Auto light (the face lights when you tilt the watch towards your face): in the Timekeeping Mode, hold B for about three seconds to turn it on or off; its indicator shows while it is on.

From Casio's guide, page E-38

1. Press C until the Stopwatch Mode shows (STW, the first mode after the Timekeeping Mode).
2. With the stopwatch stopped and reset to zero (press A if it is not), press A to choose LAP (lap times) or SPL (split times).
3. Press D to start, D to stop, and D again to carry on; when it is stopped, press A to reset it.
4. While it runs, press A for a lap time (LAP) or a split time (SPL); for a split, press A again to let the display catch up.

From Casio's guide, page E-18

1. Press C until the Countdown Timer Mode shows (TMR, right after the Stopwatch Mode).
2. If a countdown is running, press D to pause it, then A to reset it to the start time; if it is paused, press A.
3. Hold A for about three seconds until the start hour flashes.
4. Press C to step through the hours, the minutes and auto-repeat; press D to go up and B to go down, or on auto-repeat press D to switch it on or off.
5. Press A to leave.
6. Press D to start, D to pause, D to carry on; when paused, press A to reset.

From Casio's guide, page E-26