Mode hand

Indicates the current mode.

A button

Pressing this button in the Timekeeping Mode cycles between displays.

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.

Hour hand

LCD

Minute hand

B button

Press to turn on illumination.

D button

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