Watch Catalog

Casio module 3503

Quartz module. 3503 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 3503

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, press C three times; the seconds flash.
  2. Press A to move through the settings: seconds, hour, minute, month, day, day of the week.
  3. On the seconds, press D to reset them to 00.
  4. On any other setting, press D to advance it (hold for fast).
  5. Press C to leave the setting screen.

Good to know

Resetting the seconds between 30 and 59 adds one minute.

In the Timekeeping Mode, press D to switch between the time and the date display.

From Casio's guide, page EN-5

Set an alarm

  1. In the Timekeeping Mode, press C once to reach the Alarm Mode.
  2. Press A: the hour digits flash.
  3. Press D to advance the hour (hold for fast).
  4. Press A to move to the minutes and set them with D.
  5. Press A again to stop the flashing, or C to return to the Timekeeping Mode.

Good to know

In the Alarm Mode, each press of D steps through: alarm and hourly signal both on, both off, alarm only, signal only.

Hold D in the Alarm Mode to test the sound; press any button to stop a ringing alarm.

From Casio's guide, page EN-9

Light

  1. Press B in any mode to light the display.

From Casio's guide, page EN-8

Stopwatch

  1. In the Timekeeping Mode, press C twice to reach the Stopwatch Mode.
  2. Press D to start, D to stop, and D again to resume.
  3. When it is stopped, press A to reset it to zero.

Good to know

It measures in 1/10 seconds up to 59 minutes 59.9 seconds.

From Casio's guide, page EN-12

Module 3503 specs

Type
quartz
Power
Approx. battery life: 3 years on CR1616 · other watches that take CR1616
Accuracy
±30 seconds per month
Functions
Stopwatch, Alarm/hourly time signal, Light, Light color, Calendar
Manual
Casio's operation guide for module 3503

Watches with the 3503