Fitbit
The Inspire 3 will be available worldwide in September, while the higher-end Versa 4 and Sense 2 will be available in the fall.
The platform lets users synchronise their health insights to know how their lifestyle impacts their health.
The new algorithm is able to assess a user's heart rhythm when they are asleep or still.
Researchers said studying each component individually with a larger and more diverse population would be good for a follow-up.
The tech giant also provided an update on its artificial intelligence research and announced the expansion of YouTube's tools to mitigate the spread of health misinformation.
Customers can get a refund of $299 for the product.
The tech giant shut down its dedicated health division this year, but it released a variety of consumer- and clinician-facing projects.
In the September monthly update, host Jonah Comstock dives into big news for big tech, data security threats, a drug pricing battle and more.
Eligible Onduo users can get a Fitbit Inspire 2, as well as access to Fitbit Premium.
HIMSS Media editors discuss last week's big news story.