What do all the buttons do on my devices home screen?

The G5 watch has four buttons for navigation. Press the top right button to power on the device
and access the main menu.

You will then be shown the following options:
'Play Golf' = Select a golf mode to play.
'Settings' = Change settings on your watch such as turning
scoring on/off or changing yards to metres.

'Shutdown' = Power down the device.