Aipower is a start-up that had great success in its crowdfunding endeavors for its Wearbuds product. This is a type of fitness band that also houses a pair of truly wireless (or TWS) earbuds. They will be on show at CES 2020, along with some new products, a smartwatch included.
https://www.notebookcheck.net/Aipower-is-going-to-CES-2020-bringing-its-innovative-Wearbuds-and-more.447909.0.html