You can use CASIO WATCHES to specify the amount of time until the Bluetooth connection is automatically terminated and the illumination duration, and to configure other settings.

1. Tap the “CASIO WATCHES” icon.

2. Hold down the (C) button for about 3.5 seconds.

This causes the second hand to move to [C] and establishes a connection between the watch and phone.

3. Select the setting you want to change and then perform the operation shown on the phone screen.