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The Oura Ring 4 is a titanium smart ring that tracks sleep, heart rate, temperature and recovery, and scores your readiness each morning. Its main upgrade over the Ring 3 is a smoother inner sensor array with more sensing channels and better accuracy, plus a slimmer profile. It suits people who want continuous health tracking without a screen on their wrist. The catch is the subscription needed for most insights, which rivals like Ultrahuman partly avoid. Reviewers rate accuracy and comfort highly but complain about the fee and the ring's plastic feel compared with the titanium look.
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In stockShips from abroad · duties may apply
In stockShips from abroad · duties may apply
Availability unknownSold by azing_electronics (99.7% positive, 151,100 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 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.
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Lowest price we've seen: $180.00 on Nov 9 at eBay. Tracked across 10 stores since Nov 9.
Owners rate the Ring 4 highly for comfort and sleep insight, and many say it beats wrist wearables for overnight tracking. The recurring complaints are the subscription and the battery life, which some find shorter than promised.
The Oura Ring 4 is a smart ring in the Stealth color, made of titanium. This listing is for size 10, model number JZ90-54218-10.
The ring is brand new and sealed in the manufacturer's original packaging. It comes with the original box and paperwork, and all originally boxed contents are included.
