Like other people, I have this issue, with my new Venu SQ Music. Trying four different pairs of bluetooth earbuds, the sound is deafening at the lowest setting on the watch.
I emailed support, and after days, the response back was to send me canned information about reception, which was just insulting.
This is an issue with the watch; my phone works fine with the perfectly compliant earbuds, as does my laptop. The problem seems like the fact the Garmin only has 10 volume steps, so presumably 10% each time. At 10% volume, it's still earsplitting, to the point of actual ear damage.
I know there's a list of 'compatible' headphones. I don't want to buy something else, when I have, again, four perfectly fine pairs, that I like.
Has anyone ever resolved this? Modifying one of the on-device files? Modifying a firmware? Finding an actual human at Garmin that can help?
I'm posting here as a ditch effort before just returning this. The sole reason I bought this watch was for the music capability.