Watch Catalog

Casio module 3515

Quartz module. 3515 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 3515

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. On the current time screen, hold A for at least two seconds to enter the Control Mode.
  2. Select SETTING with A and D, and press C.
  3. Move the pointer to WATCH SETTINGS and press C, then to DATE & TIME and press C.
  4. Move the pointer to TIME SETTING and press C: a cursor appears under the hour.
  5. Change the hour with A and D, press C, then change the minute the same way.
  6. Press C to confirm, then hold E for at least one second to return to the time screen.

Good to know

The date is set the same way under DATE SETTING (year, month, day), and TIME FORMAT in the same menu switches 12/24-hour.

Normally the watch sets itself from a paired phone running the CASIO WATCHES app, or from GPS.

From Casio's guide, page 53

Daylight saving time

  1. On the current time screen, hold A for at least two seconds to enter the Control Mode.
  2. Select SETTING with A and D, and press C.
  3. Move the pointer to WATCH SETTINGS and press C, then to HOME TIME and press C.
  4. Move the pointer to DST and press C.
  5. Choose AUTO, OFF or ON with A and D, and press C.
  6. Hold E for at least one second to return to the time screen.

Good to know

AUTO, the factory setting, switches between summer and standard time by itself.

From Casio's guide, page 52

Home City

  1. On the current time screen, hold A for at least two seconds to enter the Control Mode.
  2. Select SETTING with A and D, and press C.
  3. Move the pointer to WATCH SETTINGS and press C, then to HOME TIME and press C.
  4. Move the pointer to HOME TIME CITY and press C.
  5. Move the pointer to your city with A and D, and press C.
  6. Hold E for at least one second to return to the time screen.

From Casio's guide, page 52

Set an alarm

  1. On the current time screen, hold A for at least two seconds, select SETTING with A and D, and press C.
  2. Move the pointer to WATCH SETTINGS and press C, then to ALARM and press C.
  3. Move the pointer to the alarm you want (1 to 4) and press C.
  4. Choose OFF, ON or ON (SNZ) with A and D, and press C.
  5. Set the hour with A and D, press C, then set the minute.
  6. Press C to confirm, then hold E for at least one second to return to the time screen.

Good to know

With snooze on, the alarm repeats every five minutes up to seven times.

Press any button to stop a sounding alarm.

From Casio's guide, page 56

Light

  1. Press B to light the face.
  2. For Auto Light, hold A for two seconds on the current time screen, select SETTING and press C.
  3. Go to GENERAL SETTINGS, then LIGHT, then AUTO LIGHT, pressing C after each.
  4. Choose ON or OFF with A and D, press C, then hold E to return to the time screen.

Good to know

Auto Light turns the light on when you tilt the watch towards you by 40 degrees or more.

DURATION in the same LIGHT menu sets 1.5 or 5 seconds.

From Casio's guide, page 84

Button beep

  1. On the current time screen, hold A for at least two seconds, select SETTING with A and D, and press C.
  2. Move the pointer to GENERAL SETTINGS and press C, then to BEEP/VIBE and press C.
  3. Move the pointer to BUTTON OPERATION and press C.
  4. Choose BEEP+VIBE, BEEP, VIBE or OFF with A and D, and press C.
  5. Hold E for at least one second to return to the time screen.

From Casio's guide, page 78

Stopwatch

  1. On the current time screen, select STOPWATCH with A and D, and press C.
  2. Press C to start, C to stop, and C again to carry on.
  3. When it is stopped, press E to reset it to zero.
  4. For a split time, press E while it runs.

Good to know

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

From Casio's guide, page 58

Countdown timer

  1. On the current time screen, select TIMER with A and D, and press C.
  2. Hold A for at least two seconds: a cursor appears under the minutes.
  3. Change the minutes with A and D, press C, then change the seconds.
  4. Press C to confirm.
  5. Press C to start and to pause the countdown; when it is paused, press E to go back to the start time.

Good to know

For a quick setting, press A or D on the TIMER screen: each press takes 30 seconds off or adds 30 seconds; then press C to start.

At zero the watch sounds and/or vibrates for 10 seconds; press any button to stop it.

From Casio's guide, page 59

Module 3515 specs

Type
quartz
Power
Charging system compatible with dedicated cable (requires device with Type-A USB terminal)
Accuracy
±15 seconds per month (with no GPS signal reception and mobile link function)
Functions
World time, Moon data, Sunrise/sunset display, Stopwatch, Timer, Alarm/hourly time signal, Light, Light color, Calendar, Mute feature, Energy saving feature, Battery display/alert, Run time, Airplane mode, Vibrator, 12/24-hour format, Sensor feature details
Manual
Casio's operation guide for module 3515

Watches with the 3515