For someone coming from the classic handsfree earphones, I noticed a difference in recording and sound quality. They come with the appropriate adapter for connection to both PC female 3.5mm and two male connectors. The build quality is plastic, it's not something amazing for 2.5 euros, but it's value for money compared to something worse from the kiosk for 7 euros.

They have average sound quality (logical for this price). They are also not relatively small, so they may not fit well on larger heads.
The major drawback is that they have excessively thin plastic and appear very fragile. I don't think they will withstand the slightest pressure in a laptop bag