You can add up to 2 GB of music to your Apple Watch so you can listen to music on your watch using a Bluetooth speaker or headphones even when you are out of range of your iPhone. Despite this, if you want to delete the music, It is easy to do.
You must use your phone to delete a playlist from your watch. Tap the app icon “Watch” on the home screen.
Make sure the screen “My watch” is activated. Opposite case, touch the icon “My watch” at the bottom of the screen.
On the screen “My watch”, Touch “Song”.
The playlist that is currently on your watch appears next to “and then put your device into pairing mode”. To delete this playlist from your watch, Touch “and then put your device into pairing mode”.
Synchronized playlist is tagged with “Synchronized” and a check mark on the list of playlists available on your phone.
Before removing the playlist from your watch, be sure to connect your watch to the charger. Your watch must be charging to sync or erase music from it. Scroll to the bottom of the list and tap “None”.
When there is no synced playlist on your watch, a check mark appears next to “None”.
If you select your watch as a music source and select “Playlists”, a message will appear on your watch stating that there is no music available.
Again, make sure your Apple Watch is charging before deleting a playlist or adding a playlist to it.
