A button

Holding down this button for at least two seconds in any mode displays the setting screen.

C button

Each press cycles between watch modes.

In any mode, hold down this button for at least one second to return to the Timekeeping Mode.

L button

Press to turn on illumination.

B button

Pressing this button while any setting screen is displayed will change the setting.

D button

Pressing this button while any setting screen is displayed will change the setting.