NEW YORK TIMES: This Ring on Your Finger Tracks Your Sleep. Is It Worth the Splurge?

This Ring on Your Finger Tracks Your Sleep. Is It Worth the Splurge?





The $350 Oura Ring 4 looks sleek and cool, and it may be useful for data-hungry health enthusiasts. But it failed this sleep-deprived parent. By Brian X. Chen from NYT (New York Times) Technology
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