Watch Catalog

Casio module 5730

Quartz module. 5730 is the number engraved on the caseback of these watches, and Casio files its operation manual under it. 2 watches in the catalog run on it.

How to operate module 5730

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 for at least two seconds and release it when the Home City name shows; the hands move out of the way.
  2. Press C until the setting you want flashes: Home City, summer time, 12/24-hour format, seconds, hours, minutes, year, month, day, button tone, then light duration.
  3. On the 12/24-hour format, press B or D to choose 12H or 24H.
  4. On the seconds, press D to reset them to 00.
  5. On any other setting, press B or D to change it (hold for fast).
  6. Press A to leave the setting screen.

Good to know

Resetting the seconds between 30 and 59 adds one minute.

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

With no button pressed for about two or three minutes, the watch leaves the setting screen by itself.

From Casio's guide, page 8

Summer time

  1. In the Timekeeping Mode, hold A for at least two seconds and release it when the Home City name shows.
  2. Press C: the summer time setting flashes.
  3. Press B or D to choose OFF (always standard time) or ON (always summer time).
  4. Press A to leave. DST shows while summer time is on.

From Casio's guide, page 8

Home City

  1. In the Timekeeping Mode, hold A for at least two seconds and release it when the Home City name shows.
  2. Press B or D to choose your city (hold for fast).
  3. Press A to leave.

Good to know

To see the Home City for about two seconds, press A in the Timekeeping Mode.

From Casio's guide, page 8

Set an alarm

  1. Press C until the Alarm Mode shows (ALM, the last mode before the Timekeeping Mode).
  2. Press D until the alarm you want shows, AL1 to AL5.
  3. Hold A for at least two seconds and release it when the hour flashes.
  4. Press B or D to set the hour, then C to go to the minutes and B or D to set them.
  5. Press A to leave; the alarm is now on and AL shows.
  6. To switch an alarm on or off, select it with D in the Alarm Mode and press A: on shows when it is on, - - when it is off. AL shows while any alarm is on.
  7. For the hourly signal, press D until SIG shows and press A to switch it on or off.

Good to know

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

An alarm sounds for 10 seconds; press any button to stop it.

Hold C for at least two seconds in any mode to go back to the Timekeeping Mode.

From Casio's guide, page 10

Realign the hands

  1. In the Timekeeping Mode, hold A for at least five seconds; release it when H.SET stops flashing and 0:00 flashes.
  2. If the hour and minute hands are not at 12 o'clock, press B or D to move them there.
  3. Press A to finish.

Good to know

Strong magnetism or a knock can make the hands differ from the digital time.

From Casio's guide, page 14

Light

  1. Press B to light the display.
  2. To change the duration: in the Timekeeping Mode hold A for at least two seconds until the Home City name shows, then press C 10 times until LIGHT shows.
  3. Press B or D to choose 1 (1.5 seconds) or 3 (three seconds), then A to leave.

Good to know

The light goes off when an alarm sounds and does not work while the hands move fast.

To read the display behind the hands, press B and C together; press them again, or C, to bring the hands back.

From Casio's guide, page 7

Button beep

  1. In the Timekeeping Mode, hold A for at least two seconds and release it when the Home City name shows.
  2. Press C nine times: KEY♪ or MUTE flashes.
  3. Press B or D to choose KEY♪ (beep on) or MUTE (beep off), then A to leave.

Good to know

Alarm and timer tones still sound with the beep off.

From Casio's guide, page 14

Stopwatch

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

Good to know

It counts in 1/100 seconds for the first hour, then in seconds, up to 24 hours.

From Casio's guide, page 12

Countdown timer

  1. Press C until the 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 for at least two seconds and release it when the hours flash.
  4. Press B or D to set the hours; press C to go to the minutes, then the seconds, and set each with B or D.
  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 up to 24 hours in one-second steps; set 0:00 00 for 24 hours.

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

From Casio's guide, page 13

Module 5730 specs

Type
quartz
Power
Approx. battery life: 3 years on CR1025 · other watches that take CR1025
Accuracy
±15 seconds per month
Functions
World time, Stopwatch, Timer, Alarm/hourly time signal, Light, Light color, Calendar, Mute feature, 12/24-hour format, Hand shift feature
Manual
Casio's operation guide for module 5730

Watches with the 5730