Oura is a Finnish health technology company founded in 2013 and is reported to be the world's first wellness ring and app that shows how a user’s body responds to lifestyle changes by analyzing sleep, activity levels, daily rhythms, and physiological responses. The product is priced at around USD 300 per unit. Moreover, according to recent studies done in June 2020, the ring is also able to measure and log data ranging from body temperature to heart rate and respiratory function.

In March 2020, the company started to work with the University of California San Francisco (UCSF) on a new study to see if its device can help detect early physiological signs that might indicate the onset of Covid-19. From the study, as of June 2020, researchers suggested that the ring has the ability to identify Covid-19 symptoms up to three days in advance, which has an accuracy reading of around 90%. Additionally, it was reported that the NBA had purchased up to 1,000 rings as its players geared up to restart the season.