A word of caution, I bought one of these hoping to be completely wireless.
I charged it, and then tried to set it up, exactly as described in the manual ... it would not assign to the same "quadrant" as my wireless controller.
I called MS support, and the rude, arrogant lady I spoke to told me it will not work with my wireless controller, as my controller is fairly old, the software isn't compatible.
That's right, the software in my Microsoft wireless controller, is not compatible with the software in my Microsoft wireless headset.
The official Microsoft fix for this ? ... Go and buy a new wireless controller, or use my wired controller ! They would not replace my old controller as I was out of warranty.
It doesn't mention anywhere on the packaging, or on any of the reviews/website I have read, that there may be compatibility issues.
When I did use this online, in a game of Rainbow Six Vegas I had complaints of being too quiet.
Its also extremely uncomfortable if you have 20mm stretched earlobes :)