Normally you’ll leave your watch on all the time and use your wrist to wake-up and turn off your watch screen. We suggest that you only use the Home key to turn off your watch if you don’t plan to use it for a period of time, since your watch might need up to 30s to synchronize to the system when you turn it back on.
To activate the Screen Wake-Up, start by pressing the Back key to open the menu and tap Settings .
Tap Next to open the 2nd Settings menu.
Tap Screen Wake-Up to open the panel.
Use the switch to turn it On/Off and tap Done
.