Google Pixel Watch 3
Android Wear OS
1 Find "Brightness"
Slide your finger downwards starting from the top of the screen.
Press the settings icon.
Press Display.
Press Brightness.
2 Turn automatic brightness on or off
Press the indicator next to "Adaptive brightness" to turn the function on or off.
3 Adjust screen brightness manually
Press the plus icon or the minus icon to select the required brightness.
4 Return to the home screen
Press the crown to return to the home screen.