Hearing aids feel the vibes, hide in your ear canal at CES 2019
https://www.cnet.com/news/hearing-aids-feel-the-vibes-hide-in-your-ear-canal-at-ces-2019/
Some of the hearing aid products introduced at CES 2019 are still very expensive, but one starts at just $300. Here's a look.
A wristband designed to help deaf people "hear" music at concerts