So, it looks like you have two ways of using the apple watch to,listen to music with Bluetooth headphones: 1. Pair the headphones with your iPhone and simply use the watch as a way of controlling what's being played. In this case you are actually listening through the iPhone...and corded headphones would work as well. The phone is not optional. 2. Pair the headphones with your watch. Sync a music playlist from the iPhone watch app to the watch and place the watch on the charger so it can transfer the songs locally to the watches memory. The phone can now be left behind and the playlist can be played via the paired Bluetooth headset. Do I have that right? Is there any way to stream or listen through the watch while it's paired to the headset?