Bone-conducting headphones have been on the market since a while - the tech is mature is enough not to be expensive, and the sound quality is also okay, if you

Bone-conducting headphones have been on the market since a while - the tech is mature is enough not to be expensive, and the sound quality is also okay, if you disregard the lack of bass (according to others' reviews). They pretty much work by resonating very quick on your temple.