A:Answer AFIB is when your upper chambers of the heart aren't beating right. AFIB is also got a lot of symptoms. I wouldn't trust a watch to detect AFIB. I think all it really does is identify irregularities, which AFIB technically is, but still wouldn't rely on this watch strictly for that. As to your question.... probably, but I'm not a doctor, lawyer or work for the company, so that should probably be asked someone that may be all three.