Change the display time out and screen brightness.
INSTRUCTIONS & INFO
ADJUST SCREEN BRIGHTNESS: Press the Rotating Side button from the clock-screen.
Scroll to and select Settings.
Select Display.
Select Adjust Brightness then select the desired option.
CHANGE SCREEN TIMEOUT: To turn off the Always-on screen display, from the Display screen select the Always-on screen switch. Note: Always-on screen is on by default.