https://techcrunch.com/2021/04/26/forerunners-eurie-kim-will-share-why-she-invested-in-oura-on-extra-crunch-live/

When it comes to building a successful startup, biotech and hardware happen to be two of the most difficult verticals in the tech industry. But Oura is doing it anyway.

The health and fitness tracking ring has been used in a number of studies around COVID-19 and been worn by NBA and WNBA players to help prevent outbreaks in the league. Oura has raised nearly $50 million from investors including Lifeline Ventures, Bold Capital Partners and Forerunner.