Use a Longer Passcode on Your Watch

You can create a passcode as long as 10 digits on your watch if you want better security. To add a passcode from 5-10 digits long, turn off “Simple Passcode” on the “Passcode” screen in the “Watch” app on your phone.

The slider button moves to the left and turns black and white, as shown below.

Enter the current 4-digit passcode on your watch.

Then, enter a 5- to 10-digit passcode and tap “OK” when you are finished.

Now, you can use the longer passcode to access your watch.