Music works great on the watch is that's all I am using (although I sometimes get very brief dropouts as if the headphone have become momentarily disconnects or I'm getting a bit of static).
Is I'm playing music and then start trying to start , say, a running activity, the music stops playing. If I start and activity and then try to play music, it plays for about 1 second and then won't play any longer.
The whole point of this watch is to be able to do an activity and listen to music at the same time -- particularly running as that's a time when you don't want to be lugging your phone around.
I've read some other things online that suggests the watch isn't designed to play music during an activity??????