This product works very well and as advertised. Il Lexin BF4M non mi ha convinto soprattutto per il lieve rumore di sottofondo che si sente quando, con Interfono attivo, non si parla. Of course this wont give you premium sound but for this price point I think its a winner. As a result, I found myself continually getting my phone out of my pocket to do the skipping. Un son pur, des basses présentes. ???????????? After I installed them, I didnt experience any wind noise to speak of. Super cute, super comfortable, and a great price. Either one side too quite from the get get go. The Rondo seems to be very small to wear.