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The Oura Ring 4 is a titanium smart ring that tracks sleep, heart rate, blood oxygen and daytime activity from a finger. Its standout is comfort: at about 0.2 oz it disappears on the hand and lasts up to eight days per charge, far longer than most smartwatches. It suits people who want health and sleep data without a screen on their wrist, though it needs a subscription for full insights and is not a workout device. Against the Ring 3 it adds more sensors, a flatter inner surface and improved signal accuracy.
In stock
In stock
Availability unknownSold by purpletechnado (100% positive, 95,500 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
Availability unknownSold by ashnil_29 (0% positive, 9 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
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Lowest price we've seen: $249.00 on Nov 9 at Walmart. Tracked across 2 stores since Nov 9.
Owners rate the Ring 4 highly for comfort and sleep insight, and many say they forget they are wearing it. Complaints center on the subscription and on battery life falling short of the eight-day claim with heavy use.
