Watch Catalog

Casio module 3506

Quartz module. 3506 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 3506

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 to open the setting screen.
  2. Use A and C to move the pointer to TIME ADJUSTMENT, then press B.
  3. Move the pointer to MANUAL and press B: a cursor appears under the hour.
  4. Use A and C to change the hour, then press B to move on to the minute, year, month and day, setting each the same way.
  5. After the day, press B, select YES and press B to save.
  6. Press D twice to leave the setting screen.

Good to know

The watch sets itself while it is linked to a phone; manual setting is for when it cannot connect.

The 12/24-hour format is under TIME ADJUSTMENT as 12/24H.

From Casio's guide, page 18

Daylight saving time

  1. In the Timekeeping Mode, hold A for at least two seconds to open the setting screen.
  2. Use A and C to move the pointer to HOME TIME, then press B.
  3. Move the pointer to DST and press B.
  4. Use A and C to choose AUTO, OFF (always standard time) or ON (always summer time).
  5. Press B to save, then press D twice to leave.

Good to know

Every city starts on AUTO, which switches between summer and standard time by itself.

From Casio's guide, page 17

Home City

  1. In the Timekeeping Mode, hold A for at least two seconds to open the setting screen.
  2. Use A and C to move the pointer to HOME TIME, then press B.
  3. Move the pointer to CITY and press B.
  4. Use A and C to pick your city.
  5. Press B to save, then press D twice to leave.

From Casio's guide, page 17

Set an alarm

  1. In the Timekeeping Mode, hold A for at least two seconds, move the pointer to ALARM with A and C, and press B.
  2. Move the pointer to the alarm you want (there are four) and press B.
  3. Use A and C to choose OFF, ON, or ON (SNZ) for snooze, then press B.
  4. Use A and C to set the hour, press B, then set the minute and press B.
  5. Select YES and press B to save.
  6. Press D twice to leave.

Good to know

Press any button to stop a sounding alarm. Snooze repeats every five minutes, up to seven times.

From Casio's guide, page 20

Light

  1. Press E to light the face.
  2. To change the duration, hold A in the Timekeeping Mode for at least two seconds, move to LIGHT and press B.
  3. Move to DURATION, press B, and choose 1.5 SEC. or 3.0 SEC. with A and C.
  4. Press B to save, then press D twice to leave.

Good to know

AUTO LIGHT under the same LIGHT menu lights the face when the watch is tilted 40 degrees or more; it turns itself off after about six hours unless you turn it off first.

From Casio's guide, page 9

Button beep

  1. In the Timekeeping Mode, hold A for at least two seconds to open the setting screen.
  2. Use A and C to move the pointer to BEEP, then press B.
  3. Move the pointer to OPERATION and press B.
  4. Use A and C to choose ON or OFF.
  5. Press B to save, then press D twice to leave.

Good to know

A mute indicator shows in the Timekeeping Mode while the button tone is off.

From Casio's guide, page 29

Stopwatch

  1. From the Timekeeping Mode, press C twice to reach the Stopwatch Mode.
  2. Press B to start, B to stop, and B again to carry on.
  3. For a split time, press D while it runs; press D again to release it.
  4. When it is stopped, press D to reset it to zeros.

Good to know

It counts up to 99 hours 59 minutes 59 seconds in 1-second steps.

From Casio's guide, page 28

Countdown timer

  1. From the Timekeeping Mode, press C once to reach the Timer Mode.
  2. Hold A for at least two seconds, set the number of repeats with A and C, and press B.
  3. Use A and C to pick the timer in the sequence, then press B.
  4. Set the minutes with A and C, press B, then set the seconds and press B.
  5. Select YES and press B to save.
  6. Press B to start, pause and resume the countdown; while paused, press D to reset it to the start time.

Good to know

Start times go up to 60 minutes in 1-second steps.

At the end the watch beeps or vibrates for 10 seconds; press any button to stop it.

From Casio's guide, page 26

Reset

  1. In the Timekeeping Mode, hold A for at least two seconds to open the setting screen.
  2. Use A and C to move the pointer to RESET ALL SETTINGS, then press B.
  3. Move the pointer to EXECUTE and press B.
  4. Move the pointer to YES and press B; the watch returns to the Timekeeping Mode and shows AC when done.
  5. Press A to clear AC from the display.

Good to know

A reset also removes the phone pairing.

It cannot be done while the Airplane Mode is on.

From Casio's guide, page 31

Module 3506 specs

Type
quartz
Power
Approx. battery life: 2 years on CR2032 · other watches that take CR2032
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, Energy saving feature, 12/24-hour format, Flight mode, User profile creation, Vibration on/off, Sensor feature details
Manual
Casio's operation guide for module 3506

Watches with the 3506