The headset itself will be movement sensetive? I don't believe so. Many have speculated that a mic would be built into the wiimote, but Nintendo already said it won't be because it would make the controller overly complex. Also, the mic shouldn't be built into the wiimote because your gonna be swinging it around and also, if it was for online chat, the wiimote speaker would interfere with a mic, aswell.Originally Posted by Sam_Harris
I'm guessing Nintendo will make it an actual headset, but who knows what it will look like. I doubt it would be motion sensetive because moving a microphone around causes wind-noise. I'm guessing the headset will be bluetooth, as the controller is, and will be very sleek, like the console is.
This may be wishful thinking, but if it were bluetooth, I wonder if you could just use any bluetooth cellphone headset? That way, you would have a you selection and you could pick out the one that best fits your ear/your style.