Normally you’ll leave your watch on all the time and use your wrist to wake up the screen and put it to sleep.
To turn off the screen backlight, lower the wrist.
You can also press the Home key briefly.
If you plan not to use your watch for a while, hold down the Home key to turn your watch off to save energy. If your watch has been turned off for an extensive period, it may revert to its default time. When you charge your watch, it will need up to 30s to synchronize with the system.
Press to go back to the watch face.
Press to open the menu or go back one step.
Hold down to turn your watch On or Off.
Hold down for 4s to call for attention.