When you swipe down from your watch face, you get to the Quick Settings. It is a set of shortcuts that will allow you, in a single move, to reduce your battery consumption, activate quiet modes, pay with your watch, find your phone and more.
Here is the control options you may find :
Airplane mode : Toggles Airplane mode
Gpay : Google Pay allows you to pay by opening linked bank card
Theater Mode : Turns off display and ignores touch
Do not disturb : Blocks notifications
Screen brightness : Adjusts screen brithness
Low Power Mode : Trigger settings to reduce consumption
Find my phone : Ring your phone to locate it
Flash light : A white screen is displayed
Touch lock : Disable the touch screen
Note that these features cannot be chosen on the menu, they are displayed according to the user’s settings and country.