Adjusting the screen timeout
Changing the length of time before the lock screen shows up (known as screen timeout), and brightness of your device can impact your battery life. Decreasing the time of inactivity before your device goes to sleep and lowering the brightness of your device can help extend your device's battery life.
1.
From within the Settings app, scroll to and tap Device.
2.
Tap Display.
3.
Tap Screen timeout.
4.
Select your preferred screen timeout duration.
Decrease the screen timeout to help extend your watch's battery life.
5.
You've completed the steps!
