Apple Watch can listen to music, but it does not have a headphone jack, so you cannot plug in wired headphones, but it can connect to Bluetooth headphones.
There are two ways to listen to music on Apple Watch:
1. One is to connect to iPhone, or connect to computer via Wifi, and then use Apple Watch as a remote control to remotely play iPhone Or music in iTunes software on your computer.
2. Another way is to synchronize the music in the iPhone to the Apple Watch, set it in the Apple Watch app on the phone, open the music in my watch, and add the synchronized list (default Yes No) After selecting the playlist on iPhone, when the Apple Watch is charging, the synchronization process of iPhone music will be completed, copying the music on iPhone to the watch. In this way, the watch can play music even if the watch is not connected to the phone. Enter the music on Apple Watch, press the screen firmly, and when the Force Touch menu appears, select the source and change the source from iPhone to Apple Watch. If the watch is not paired with a Bluetooth headset, it will be forced to pair with the Bluetooth headset.