1. SET SCREEN LOCK: From the clock screen, press the Power/Home button.
   Note: Samsung Galaxy Watch will automatically lock when Bluetooth connection is ended. If PIN is forgotten, reconnect to phone via Bluetooth to unlock the device and adjust PIN setting.
   
2. Rotate the bezel to and select the Settings app.
   
3. Rotate the bezel to and select the Security. Rotate the bezel to and select Lock.
   
4. Select Type.
   
5. Select the desired screen lock.
   Note: For this demonstration, PIN was selected.
   
6. Enter desired 4 digit PIN.
   
7. Re-enter the 4 digit PIN.
   
8. UNLOCK DEVICE USING SECURITY LOGIN: When the screen is locked, enter your security code to unlock the device. 
   
9. CHANGE SECURITY LOCK: From the lock screen, select Type > enter the current security lock code > select the desired lock > enter the desired lock code.