Now, that [helmet cam] captures just the facial performance. Does it also capture audio, or is that separate?

It does capture audio, but it's low resolution audio. It's good for lining up the performance that you're videotaping with the professional audio that's recorded at the same time. But you want to professionally mic and have a boom operator come in. But no, this is incredible, and it's 3D printed. Most of the parts on there are 3D printed.