Can confirm. Had mine a couple of months now and you can store 4gb on it for remote listening. The watch connects seperately to BT headphones.
Overall the watch is really excellent. I am using it with an s8+ Galaxy.
The battery lasts just about a day (5.30am wake up until 10pm at night) and charges unbelievably quick.
The only complaint I have is that the matt black paint has chipped around the sides and I have not dropped it or hit it off anything. I am contemplating returning it for a new one but have not got around to it yet.