12don MSN
Oura Ring 4 review: This smart ring is a great sleep tracker, but not a great activity tracker
The iconic sleep-tracking smart ring is accurate and comfortable—but smart rings make poor activity trackers.
Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. The Oura ring is the ...
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