I saw something like this on Blacklist.
What are Bone Conduction Headphone benifits?
What are Bone Conduction Headphones? With the name bone conduction, one can probably think it has something to do with the bones. Well, your guess is correct, the bone conduction headphones operate on the theory that sound waves can move better through bones. Naenka Runner Pro: Naenka Co...
www.naenka.com