Image: OuraOura Ring 4
All the sleep and activity tracking of a smartwatch in a ring that reads as jewelry. Weighs just 3 to 5 grams, with no screen to squint at.
A titanium smart ring with sensors on the inner band, offered in Silver and Stealth ($349) and Gold ($399) on the page today. It weighs 3.3 to 5.2 grams depending on size, runs 5 to 8 days per charge, and comes with a free sizing kit to wear for 24 hours first. The app requires an Oura Membership at $5.99 a month or $69.99 a year.
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