You can sync playlists and albums on your Apple Watch using watchOS.
You can keep one music playlist on your Apple Watch at a time. Audiobooks and podcasts aren’t compatible.
On your iPhone, go to the Music app.
Tap the Library tab, then tap Playlists > New Playlist.
Give your playlist a name.
Search or tap to find songs, artists, or albums to add.
When you find something that you want to add, tap the “+” sign.
After you add the item, tap Done. You can then search for more music to add.
When you’re done adding music, tap Done to save your playlist.
