Only the driver should rethink again.

The headset works perfectly, my interlocutors amazed at the quality for the price.
However, I had, while the driver was installed, often humming in the line, which, however, have only heard my interlocutors.
I have uninstalled it then and since then the problem is gone and the headset works without problems and the sound quality is very good.
I would like to give 3.5 stars.
But for eyeglass wearers it expresses may, depending on their own feelings, a bit too much on the ears, as the temples can be quickly unpleasant.