Surprising and unfortunate that Sony has stopped production of this article. It is really great. I have intra Shure dating a little. There, I admit that I am amazed more by Bluetooth. Super happy with the price paid, almost 3x cheaper than original. I am very satisfied for now. I bought them for jogging and bike. For now, I have used with the bike. Since the end of my session, I have them on (or should I say "in") ears. Comfort is very good. The sound is great. Nothing except that it is a great buy.