Everything else was already described.
The sound is divine! Opponents can be places with ease and weapon sounds are even compared to my surround system much more intense and more realistic.
The connection and installation are simple and done within 10 minutes. Simple audio cable from the transmitter with the Xbox360 connect and connect the transmitter with a USB port on the Xbox 360 for the power supply.
The chat works fine, although the voices of fellow sound less tinny than the original headset from Microsoft. My own voice is loud and clear reproduced and is also interesting that you can hear yourself talking through the headset itself.
The batteries in the headset really old forever. Now have 3 gamers nights behind me and no signs on Low Battery :)
Too bad that this has slight noise but led to deduct the product a star. But for me a counterpoint.
Otherwise an absolute buy recommendation.