Watch Catalog

Casio module 3191

Quartz module. 3191 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 3191

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. From the Timekeeping Mode, press C three times to reach the time/calendar setting mode.
  2. With the seconds flashing, press A on a time signal to correct them.
  3. Press B to move through the settings: seconds, hour, minute, month, date, day.
  4. Press A to advance the flashing digits (hold for fast).
  5. Press C to finish.

From Casio's guide, page 1

Set an alarm

  1. Press C once to go from the Timekeeping Mode to the Daily Alarm Mode.
  2. Press B to start setting: the hour flashes. Press A to advance it by one hour (hold for fast).
  3. Press B to move to the minutes, and press A to advance them.
  4. Press B to leave the setting screen.

Good to know

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

The alarm sounds for 20 seconds; press any button to stop it. Hold A in the alarm mode to test the sound.

From Casio's guide, page 1

Stopwatch

  1. From the Timekeeping Mode, press C twice to reach the Stopwatch Mode (ST).
  2. Press A to start, A to stop, and A again to carry on from where it stopped.
  3. When it is stopped, press B to reset it to zero.

Good to know

It counts up to 59 minutes 59.9 seconds; for longer times, reset and start again.

From Casio's guide, page 1

Countdown timer

  1. In the Timekeeping Mode, press B: the countdown alarm appears.
  2. Each press of B steps through the periods: 1, 3, 5, 10, 15, 20 and 30 minutes, then RESET.
  3. The countdown starts when you let go of B.

Good to know

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

From Casio's guide, page 1

Module 3191 specs

Type
quartz
Power
Approx. battery life: 2 years on CR1216 · other watches that take CR1216
Accuracy
±30 seconds per month
Functions
Stopwatch, Timer, Alarm/hourly time signal, Calendar
Manual
Casio's operation guide for module 3191

Watches with the 3191