To Specify The Illumination Duration - Casio 3518 User Manual

To specify the illumination duration

EN-42
1. In the Timekeeping Mode, hold down A until the
seconds start to flash, which indicates the setting
screen.
2. While the seconds are flashing, press B to toggle
the illumination duration between 1.5 seconds ( ) and
3 seconds ( ).
3. Press A twice to exit the setting screen.