To turn the watch on, press and hold the Power/Home button until the screen lights up and the Samsung logo is displayed. Note: If you are unable to turn your device on, plug the device into a power source for 15 minutes and then try again. For information on charging your device, see the Charge Battery tutorial.
To turn the watch off, press and hold the Power/Home button.
Select Power off. Note: If you are unable to power your device off or if it becomes unresponsive, press and hold the Power/Home button for 10 seconds, until it reboots.