Casio WSD-F10 User Manual page 43

To reset the high altitude value displayed by the "Altitude"
and "Combination" watch faces
1. Use the procedure under
change the watch face to "Altitude" or "Combination".
2. Hold your finger on the touch screen for about two
seconds. When D appears, tap it.
Performing the step below will reset the high altitude value (shared by
●
the "Altitude" and "Combination" watch faces) stored in watch memory.
To cancel this procedure at this point without resetting the value, press
the power button.
3. Tap "MAX Altitude Reset".
Note that resetting does not change the setting to 0 meters. It changes
●
high altitude value to the highest altitude attained over the past 24
hours.
"To change the watch
EN-41
face" to