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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, with no screen and no subscription-free path to its full insights. Its main draw is comfort and accuracy: the inner sensor dome is flatter than the Ring 3, so it sits closer to the skin and reads better during sleep, and the battery is rated up to eight days. Reviewers rate it highly for sleep and recovery tracking, but many say the app's deeper features require the paid membership, and the ring's shape and sizing matter more than with a watch. It suits people who want passive health data without wearing a wrist device; it is not a fitness watch replacement, since it has no GPS of its own and no display.
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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 jrj-liquidators (99.7% positive, 15,100 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
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Lowest price we've seen: $249.00 on Nov 9 at Best Buy. Tracked across 3 stores since Nov 9.
Owners rate the Ring 4 highly, mostly for sleep and recovery tracking and for how little they notice it on their finger. Complaints center on the membership paywall, sizing hassles and the lack of a screen or GPS.
