It's very small and has a single button on the end for pairing, something like the creative bt-w3 [1]. You want to avoid something that won't work without windows drivers.
The os sees it as a separate audio device, doesn't care that it is bluetooth, and can be set to switch audio playback between the internal sound and the dongle automagically.
But I still have a creative bt-w2 audio dongle, and was curious, so I gave it a try, using mvp to watch a yt-dlp mp4, showing someone talking on camera. The bluetooth speaker was 3 meters away from my laptop. No tweaks.
It looked good, I was pleasantly surprised. It definitely had better sync than I've seen on some badly compressed cable tv content.
I wasn't familiar with how bluetooth buffering used to be, but I can believe it's caused problems. I've noticed sometimes when people are using bluetooth on their phones.