I've had four of these headsets now. I treat them with coton woolled gloves. All four have broken and now I don't use them.
I have come to the conclusion that these official headsets are purposefully built to break. So much money is made from people buying their 2nd and 3rd plus heaset. Why would microsoft change this money making idea?
I would advise people to keep their receipt!
Advantages. Cheap. (for one unit)
The sound quality is good.
Makes other headsets look brilliant.