I have a Nokia 6126, and this headset adapter works beautifully. The stereo quality is good, although there's some white noise probably because of the design of the cell phone. Construction is good, but I imagine one day the wire connecting the two pieces will wear out from use and become spotty, like most headphone wires do.As the warning on Nokia's site mentions, you can use this adapter to listen to calls, but the microphone is disabled while headphones are plugged in.The only thing better than this would be for Nokia to open its hardware so that anyone can make an adapter like this. Unfortunately, they want to be the only one making money off them.