Sorry I have no idea. I couldn't even get the unit to read a CD. Tried 11, two of them brand new out of the box, still haven't read the CD. I've never learned anything about Bluetooth or headphones. As for the quality, it's pretty bad. The gold circle on the front looks like it was drawn by someone in prison. I'm not saying there aren't talented prisoners, it's just that whoever drew that golden circle clearly didn't want to be there.
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