This is a user manual that introduces the use of PQ-40 clock
The Casio PQ-40 is a digital clock that allows users to set the current time, year (2000-2039), month, day of the week, and alarm times. The device features a backlight for viewing in low light conditions and includes an alarm system with snooze functionality.
You can set the year in the range of 2000 to 2039.
When the alarm is sounding, press the Snooze/Light button to stop it.
You should replace the batteries at least once a year, even if they are still working properly.