How do I transfer music files from a mobile device to the Galaxy Watch Active?
1. Launch the Galaxy Wearable app on your mobile device.
2. Tap Home → Add content to your watch.
3. Tap Add tracks.
4. Select files and tap DONE.
To sync music on your mobile device with your Galaxy Watch Active, tap the Auto sync switch under MUSIC. The music on your mobile device will be synced automatically with your Galaxy Watch Active when it has more than 15% of remaining battery power.