Yes, WearADay has this function, offline music function. First store the songs on your phone to the watch, and then connect the watch to the Bluetooth headset to play the songs.

How HUAWEI WATCH synchronizes mobile phone music through WearADay

1. Open WearADay and enter "My Music". There will be graphic instructions when you open it for the first time.

2. Select the music that needs to be synchronized (up to five songs at a time), click "Sync" or "Scan" in the upper right corner, and then transfer.

After the synchronization is completed, return to the watch to view the synchronized songs, connect the Bluetooth headset, and enjoy the beautiful music during exercise without leaving the phone. You can also control the playback of music on your mobile phone, such as switching songs and adjusting the volume.