I don't think that's accurate. Looking at the patent application (courtesy of klyrs below, https://patents.google.com/patent/WO2017049261A1/en), it is indeed an earring that fits into a person's pierced ears. The speaker reaches up to and maybe into the ear canal, but unliked bud earphones, they are not held in place by the speaker.

In the linked pdf, see pages 1, 37, 38, 39 and 41 for diagrams. In the background, they also say "a headset apparatus in which the audio device extends through the piercing in the wearer's ear."