You can set a lock code to prevent others from accessing the contents of your smartwatch when it's not connected to your phone.
Slide your finger downwards starting from the top of the screen.
Press the settings icon.
Press Screen lock.
Slide your finger across the screen to connect at least four points and follow the instructions on the screen to create a pattern as lock code.
Key in the required PIN and follow the instructions on the screen to create a PIN as lock code.
Press Screen lock and key in the current lock code.
Press the crown to return to the home screen.