Watch Catalog

Casio module 5690

Quartz module. 5690 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 5690

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 let go when the Home City name shows; the hands move out of the way.
  2. Press C twice: the seconds flash.
  3. Press C to step through the settings: seconds, hour, minute, year, month, day, then 12/24-hour format and the other settings.
  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); mind the P indicator for p.m. in 12-hour format.
  6. Press A to finish.

Good to know

Resetting the seconds while they count 30 to 59 adds one minute.

Paired with a phone running CASIO WATCHES, the watch connects and corrects its time four times a day, at around 12:30 a.m., 6:30 a.m., 12:30 p.m. and 6:30 p.m.; setting it on the watch is for when it cannot connect.

To take the time from a paired phone now, press D in the Timekeeping Mode: TIME flashes, then OK shows and the time is adjusted.

To switch between 12-hour and 24-hour format, open the settings as above, press C eight times so that 12H or 24H flashes, press D to toggle, then press A.

From any other mode, hold C for at least one second to go back to the Timekeeping Mode.

The watch leaves the settings by itself after about two or three minutes without a button press.

From Casio's guide, page 14

Daylight saving time

  1. In the Timekeeping Mode, hold A for at least two seconds and let go when the Home City name shows.
  2. Press C once: the summer time setting flashes.
  3. Press D to choose AUTO (switches by itself), OFF (always standard time) or ON (always summer time).
  4. Press A to finish.

Good to know

All cities are set to AUTO at the factory.

With a paired phone, the summer time setting of the Home City can also be changed in the CASIO WATCHES app.

For the World Time city, open the World Time Mode, hold A for at least two seconds until the summer time setting flashes, choose with D, then press A. It cannot be set while UTC is the World Time city.

From Casio's guide, page 14

Home City

  1. In the Timekeeping Mode, hold A for at least two seconds and let go when the Home City name shows.
  2. Press B or D to change the city (hold to scroll fast).
  3. Press C: the summer time setting flashes; change it with D if needed.
  4. Press A to finish.

Good to know

The watch has 38 time zones plus UTC; the CASIO WATCHES app can pick from about 300 cities and set the World Time city.

In the World Time Mode, press A and B together to swap the Home City time and the World Time.

From Casio's guide, page 14

Set an alarm

  1. In the Timekeeping Mode, press C until the mode hand points to AL, after the World Time, Stopwatch and Timer Modes.
  2. Press D until the alarm you want shows, AL1 to AL5.
  3. Hold A for at least two seconds and let go when the hour flashes.
  4. Press B or D to set the hour (hold for fast); P shows for p.m. in 12-hour format.
  5. Press C: the minutes flash. Press B or D to set them.
  6. Press A to finish: the alarm is on and ALM shows.
  7. Hold C for at least one second to go back to the Timekeeping Mode.

Good to know

To switch an alarm on or off, in the Alarm Mode press D to its screen and press A; ALM shows while any alarm is on.

The alarm beeps for 10 seconds; press any button to stop it. It does not sound when the battery is low.

For the hourly time signal, press D in the Alarm Mode until SIG shows and press A to turn it on or off.

Alarms can also be set with the CASIO WATCHES app.

From Casio's guide, page 17

Realign the hands

  1. In the Timekeeping Mode, hold A for at least five seconds and let go when SUB flashes.
  2. If the mode hand does not point to INFO, press B or D to move it there.
  3. Press C: the hour and minute hands can now be adjusted.
  4. If they are not at 12 o'clock, press B or D to put them there.
  5. Press A to finish.

Good to know

Strong magnetism or impact can make the hands differ from the time on the digital display.

Paired with a phone, the hands can also be aligned with the CASIO WATCHES app.

To move the hands out of the way to read the display, hold B and press C; do the same again to put them back (pressing C also puts them back, but changes the mode).

From Casio's guide, page 21

Light

  1. Press B to light up the face and the display.

Good to know

To choose 1.5 or 3 seconds of light: in the Timekeeping Mode hold A for at least two seconds until the Home City shows, press C 11 times (or 12 times) until LIGHT shows, press D to pick 1 or 3, then press A.

The light goes off by itself when an alarm starts to sound, and does not work while the hands move at high speed.

From Casio's guide, page 7

Button beep

  1. In the Timekeeping Mode, hold A for at least two seconds and let go when the Home City name shows.
  2. Press C 10 times (or 11 times): KEY♪ or MUTE flashes.
  3. Press D to choose KEY♪ (button tone on) or MUTE (off).
  4. Press A to finish.

Good to know

The alarm and timer still sound when the button tone is muted.

From Casio's guide, page 22

Stopwatch

  1. In the Timekeeping Mode, press C until the mode hand points to ST, after the World Time Mode.
  2. Press D to start, D to stop, and D again to carry on.
  3. For a split time, press A while it runs (SPL shows); press A again to go back to the running time.
  4. When it is stopped, press A to reset it to zero.
  5. Hold C for at least one second to go back to the Timekeeping Mode.

Good to know

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

For two finishers: start with D, press A at the first finisher and D at the second; the first time shows, press A to see the second, and A again to reset.

From Casio's guide, page 19

Countdown timer

  1. In the Timekeeping Mode, press C until the mode hand points to TR, after the Stopwatch Mode.
  2. If the timer is running, press D to pause it, then A to reset it to the start time.
  3. Hold A for at least two seconds and let go when the hours flash.
  4. Press B or D to set the hours, press C and set the minutes, press C and set the seconds.
  5. Press A to finish.
  6. Press D to start; D pauses and resumes it. When it is paused, press A to reset it to the start time.

Good to know

The start time is set in 1-second steps up to 24 hours; 0:00 00 counts down 24 hours.

At zero it beeps for 10 seconds; press any button to stop it. It does not beep when the battery is low.

The start time can also be set with the CASIO WATCHES app.

From Casio's guide, page 20

Reset

  1. In the Timekeeping Mode, hold A for at least two seconds and let go when the Home City name shows.
  2. Press C twice: the seconds flash.
  3. Hold B for at least six seconds: ALL and RESET alternate; let go when only RESET shows.
  4. Press A to finish.

Good to know

This returns the watch settings, stopwatch, timer and alarms to their factory defaults and also deletes the pairing with the phone.

To delete only the pairing: open the settings the same way, press C twice, hold B for at least two seconds until only CLR shows (PAIR and CLR alternate), then press A.

From Casio's guide, page 22

Module 5690 specs

Type
quartz
Power
Approx. battery life: 2 years on SR726W X 2 · other watches that take SR726W x 2
Accuracy
±15 seconds per month (with no mobile link function)
Functions
World time, Stopwatch, Timer, Alarm/hourly time signal, Light, Light color, Calendar, Mute feature, Hand shift feature, 12/24-hour format, Day display
Manual
Casio's operation guide for module 5690

Watches with the 5690