The Ultimate Guide to All PROTREKs โ composed by Experts
Before using this guide, we recommend:
All settings are clearly explained and understandable.
1. In the Alarm Mode, use C and A to scrollย through the alarm screens until the one whoseย time you want to set is displayed.
2. Hold down E until the hour setting of the alarm time start to flash, whichย indicates the setting screen.
- This automatically turns on the alarm.
3. Press D to move the flashing between the hour and minute settings.
4. While a setting is flashing, use C (+) and A (โ) to change it.
- When setting the alarm time using the 12-hour format, take care to setย the time correctly as a.m. (no indicator) or p.m. (P indicator).
5. Press E to exit the setting screen.
To test the alarm
In the Alarm Mode, hold down C to sound the alarm.
To turn an alarm and the Hourly Time Signal on and off
1. In the Alarm Mode, use C and A to select an alarm or the Hourly Timeย Signal.
2. When the alarm or the Hourly Time Signal you want to is selected, pressย B to turn it on and off.
- The alarm on indicator (and the Hourly Time Signal on indicator are shown

Being a fan of CASIO watches since 2009, I strive to share my passion and knowledge with others. Through publishing short notes and curating all listings on this site, I hope to inspire fellow enthusiasts to explore the world of high-quality CASIO watches. A proud owner of GST-B200, GG-1000, GA-110. Remember: Fake Watches are for Fake People.




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