So the mic worked perfectly for about 10 minutes. Sounded great and felt great. Then I got an insane screeching through my headphones and it stopped working. Apple took my return great and no issues there.
I will be buying it again and giving it one more shot though.
To address the 2 reviews saying the volume is so low, they are probably not adjusting the gain correctly. The light in the front changes color. Blue = Headphone volume. Orange = Mic gain vol. They were likely adjusting only the headphone volume. To get to the orange/gain vol, you have to hold the button in for 2-3 seconds and then it will change to orange.
I would give it a 0 rating, or an Unfinished rating for now until I got the new unit if I could.