I’ve bought them and returned them. The sound quality is quite poor, even the equalizer in the app doesn’t help very much. Connectivity is even worse. Sometimes they lost connection although I was only 5 meters away in the same room. Telephone calls were literally impossible because of microphone problems. I didn’t even manage to do one single call, where people could understand me.
Please don’t get me wrong, I’m not bashing. I love my FP6, and it works flawlessly. But I never would recommend anybody to buy these Fairbuds.