hearing like a dolphin

It is well known that cetaceans (whales, dolphins, porpoises) hear with their lower jawbone. More specifically, the fat-filled lower jawbone conducts sound waves through the jaw to bones in the middle ears. With that in mind.. doesn't this look familiar?

"User can hear voice of caller only by contacting the bone conduction speaker on his/her head…to solve problem of communication in noisy place and for old people and people with auditory handicap." - Pantech

Talk about biomimicry. haha.