Reply To: Samsung Galaxy Watch Update [Custom Ringtone/Notification] not working [FIXED]

If you do not have the custom sound on your watch, you can use this link to be able to help you get the sound on your watch. Selecting the ringtone will have to be on your phone through the app, but this works.

https://www.droidwin.com/add-custom-notifications-ringtones-alarms-on-galaxy-watch-4-5/