I borrowed it from my friend and he says it still works, but I don't know. I usually have it off (left position), but I was trying to talk with Lead Based Toys and khult earlier and it wouldn't even pick up. Weird.
Same, when I had them they never worked, I could hear everyone but they could never hear me. Once I got a wireless it was never a prob, but those xbox brand wired are crap. I saw you were playing harbor rush with use, unfortunately you were on the other team...
there's a mic glitch that happens rarely where the xbox decides that you aren't worthy of talking any more and you have to reset your xbox for it to work again.
or...
your nat might be moderate or strict which often results in people not being able to hear each other.