Once in a great while I see something truly innovative in this space, worthy of the term "evolution". I've been using an Aftershox Trex Titanium bone-conduction headset for about a year now for work, and I really love it for what it does: allow me to hear sounds near me while at the same time conversing with my colleagues. I was skeptical of the technology having tried some really junky stuff in the past, but it has come a long way. It really does work.

This tech has been miniaturized and has advanced quite a bit, apparently:

Sonitus Technologies Molar Mic Bone-Conduction ‘Supersense’ Covert Combat/Tactical Communications Technology

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