Watch Catalog

Casio module 3221

Solar powered module. 3221 is the number engraved on the caseback of these watches, and Casio files its operation manual under it. 1 watch in the catalog runs on it.

How to operate module 3221

Short steps in our words. The buttons are lettered as in Casio's operation guide, where each task's page is given.

Set the time and date

  1. In the Timekeeping Mode, hold A until the city code flashes.
  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, button tone, light duration, then Power Saving.
  4. On the DST or the 12/24-hour format, press D to switch it (ON or OFF, 12H or 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.

Good to know

If your city is not in the list, choose one in the same time zone.

The day of the week follows the date by itself.

In 12-hour format, P marks p.m.

From Casio's guide, page 1

Daylight saving time

  1. In the Timekeeping Mode, hold A until the city code flashes.
  2. Press C once: the DST setting shows.
  3. Press D to switch between ON and OFF.
  4. Press A to leave. The DST indicator shows while summer time is on.

From Casio's guide, page 1

Home City

  1. In the Timekeeping Mode, hold A until the city code flashes.
  2. Press D (east) or B (west) to choose the city code where you use the watch.
  3. Press A to leave.

Good to know

Choose the Home City before any other setting. World time is worked out from the Timekeeping Mode time.

From Casio's guide, page 1

Set an alarm

  1. Press C until the Alarm Mode shows (ALM, right after the World Time 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 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: the alarm on indicator shows while it is on.

Good to know

In 12-hour format, mind a.m. or p.m.: P marks p.m.

An alarm sounds for 10 seconds in any mode; press any button to stop it. The snooze alarm sounds up to seven times, every five minutes, until you switch it off.

In the Alarm Mode, hold D to test the sound.

From Casio's guide, page 2

Light

  1. Press B in any mode to light the display (not while a setting screen is shown).
  2. To change the duration: in the Timekeeping Mode hold A until the display flashes, then press C 10 times: LT1 or LT3 shows.
  3. Press D to switch between about 1.5 seconds (LT1) and about three seconds (LT3), then A to leave.
  4. Auto light (the display 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.

Good to know

Auto light works only in low light, not in bright light.

Turn auto light off before riding a bicycle or driving.

Frequent use of the light can run down the battery quickly.

From Casio's guide, page 3

Button beep

  1. In the Timekeeping Mode, hold A until the city code flashes.
  2. Press C nine times: KEY♪ or MUTE shows.
  3. Press D to switch between KEY♪ (beep on) and MUTE (beep off), then A to leave.

From Casio's guide, page 3

Stopwatch

  1. Press C until the Stopwatch Mode shows (STW, after the World Time and Alarm Modes).
  2. Press D to start, D to stop, and D again to carry on.
  3. When it is stopped, press A to clear it to zero.
  4. For a split time, press A while it runs (SPL shows); press A again to let the display catch up.

Good to know

It counts up to 23 hours 59 minutes 59.99 seconds, then starts again from zero until you stop it; it keeps running in other modes.

From Casio's guide, page 2

Countdown timer

  1. Press C until the Countdown Timer Mode shows (TMR, 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 until the start time flashes.
  4. Press D to go up and B to go down; press C to move between the hours and the minutes.
  5. Press A to leave.
  6. Press D to start, D to pause, D to carry on; when paused, press A to reset.

Good to know

The start time is one minute to 24 hours; set 0:00 for 24 hours.

At zero the beeper sounds for about 10 seconds; press any button to stop it.

The countdown keeps running in other modes.

From Casio's guide, page 2

Module 3221 specs

Type
solar
Power
Tough Solar (Solar powered)
Accuracy
±15 seconds per month
Functions
World time, Stopwatch, Timer, Alarm/hourly time signal, Light, Light color, Calendar, Mute feature, Energy saving feature, Battery display/alert, Run time, 12/24-hour format
Manual
Casio's operation guide for module 3221

Watches with the 3221