You can set a lock code to prevent others from accessing the contents of your smartwatch when it's not connected to your phone.
Press the Home key.
Press the settings icon.
Press Security.
Press Lock.
Press Type.
Press Pattern.
Slide your finger across the screen to connect at least four points and press CONTINUE.
Repeat the selected lock code and press DONE.
Press Type and key in the current lock code.
Press None.
Press the Home key to return to the home screen.