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The Oura Ring 4 is a titanium smart ring that tracks sleep, readiness, heart rate, temperature and activity from the finger, with no screen and no subscription-free path to the full app. Its main draw is comfort and accuracy: the inner sensor dome is flatter than the Gen 3, so it sits closer to the skin and reads better during sleep and workouts. It suits people who want passive health tracking without a watch on their wrist, and it competes with the Ultrahuman Ring Air and Samsung Galaxy Ring, which offer similar form factors but different app depth and subscription terms. Reviewers rate it highly for sleep insight and build, and complain most about the monthly membership and the charger.
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Availability unknownSold by thirdwavediscounts (99.4% positive, 29,800 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 r3newtech (99.8% positive, 37,600 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 mojoelectronics (99.5% positive, 28,200 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 4 stores since Nov 9.
Owners rate the Ring 4 highly, mostly for sleep tracking, comfort and the app's clear scores. Complaints center on the subscription needed for full insights and on battery life that falls short of the advertised week.
