Using The App Button - Casio WSD-F10 User Manual

Using the APP Button

Pressing the watch's APP button starts up the app you assigned to it. You
can use the steps below to change the app assigned to the APP button.
1. Hold down the power button for about two seconds to
display a list of apps. Next, tap "APP Button".
This will display a list of apps that can be assigned to the APP button.
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2. Scroll the list of apps upwards or downwards until the
one you want is displayed, and then tap it.
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