SIDE BY SIDE
See prices, running costs, specifications and trade-offs side by side. Choose two to four products of the same type.
Smart ring
Matte Black finish, sizes 6 to 15 (or 'Don't know my size' with the free Gen 3 sizing kit), charging case included
$349US price, checkedSubscription-free sleep and recovery ring with up to 14 days of battery
Check price at RingConn for RingConn Gen 3 Full review →
Smart ring
Silver finish, plus Oura Membership billed separately
$349US price, checkedOura's previous-generation smart ring, with the membership billed separately
Check price at Oura for Oura Ring 4 Full review →| Criterion | RingConn Gen 3 | Oura Ring 4 |
|---|---|---|
| US price | $349Checked Oct 13, 2026 · Price details in the review | $349Checked Oct 13, 2026 · Price details in the review |
| Three-year ownership estimate | $349 Incomplete known subtotal. Not included: energy use. | $558.97 Incomplete known subtotal. Not included: energy use. |
| Choose if | You wear a size 6 to 15, want overnight sleep, HRV and temperature trends from a ring, and would rather pay $349 once than pay a yearly membership. | You want Oura's sleep, heart-rate and temperature-trend tracking in the previous-generation ring and don't need Ring 5's smaller size. |
| Main trade-off | The page gives no accuracy data for the vascular and sleep apnea insights, returns within 14 days need a valid reason such as a defect or wrong color, and the 1-year US warranty excludes battery replacement. | You pay a yearly membership for full features, and Oura says Ring 5 is 40% smaller with greater accuracy and battery power. |
| Key specifications |
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| Exact variant | Matte Black finish, sizes 6 to 15 (or 'Don't know my size' with the free Gen 3 sizing kit), charging case included | Silver finish, plus Oura Membership billed separately |
| Dimensions | 2.3 mm thick, weighing 2.5 to 3.5 g. RingConn's product page doesn't state the band width or the inner diameter of each size. | 7.90 mm wide and 2.88 mm thick. It weighs 3.3 to 5.2 g, depending on ring size. |
| Installation | No installation. If you don't know your Gen 3 size, choose the free sizing kit option ('Don't know my size') when you order. RingConn says it sends the kit before the ring ships, and that the kit arrives in 3 to 8 days, depending on location. You then submit your size under 'My Orders'. The ring pairs with your RingConn App account over Bluetooth 5.0, on iOS 17.0 or later or Android 10.0 or later. RingConn lists the box contents as the Gen 3 ring, a charging case, a USB-C charging cable and a quick start guide. | No installation. It pairs with the Oura app on iOS or Android. It charges on the included size-specific charger with a USB-C cable. Oura offers a free sizing kit with plastic sizers before you order. |
| Materials | Titanium alloy, with medical-grade epoxy and a PVD coating. RingConn's FAQ describes the matte finish as non-reflective and understated. | The inner and outer surfaces are titanium, and the interior has no seams. Oura says minor scratches from regular wear are normal. |
| Warranty | The warranty runs 1 year from delivery in the US and everywhere else outside the EEA. EEA countries get 2 years. RingConn's Return & Refund Policy says it will repair, replace or refund if a defect in its workmanship causes damage, with proof of purchase. It excludes improper or negligent use, maintenance contrary to instructions, normal wear and tear and accidental damage. The policy calls rechargeable batteries consumables with a limited lifespan, and the standard warranty doesn't include battery replacement. It doesn't say whether cosmetic damage or loss is covered. | A 1-year protection plan is included with purchase. The product page offers upgrades to 2 years for $45 or 3 years for $60. |
| Returns | The product page advertises '14-Day Returns & Exchanges', with conditions applying and sizing kits excluded. The fine print is in RingConn's Return & Refund Policy. You have to request a return within 14 calendar days of delivery. Returns and exchanges both need a valid reason. The policy lists a defect or damage on delivery, a color different from the one you ordered, or a product that differs significantly from its description. The returned ring must also be in its original condition and, in the policy's words, one that 'has not been opened and used'. You pay return shipping, and shipping, handling and tax aren't refunded. The exceptions are a return for a defect, damage or non-conformity you documented with photos in advance, or one caused by RingConn's error. No restocking fee is stated, but RingConn may deduct for damage, wear or missing parts. Sizing kits are non-refundable and non-returnable. Canceling after a kit has shipped costs $10. For a different size or color, the policy recommends a return request and a new order. | If you bought the ring directly from Oura's online store, you can return it within 30 days of receiving the order. It has to be fully functional and undamaged, and come back with the charger and USB-C cable. Ring sets can't be partly returned. Exchanges are only for a different size of the same ring, and each item can be returned or exchanged once. Refunds go to the original payment method, but original shipping and handling aren't refunded. Rings bought from other retailers follow that retailer's policy. Oura's return FAQ says to cancel the membership when you return a ring. The Ring 4 Silver product page says canceling doesn't entitle you to a full or pro-rated refund of fees you've paid. Warranty replacements can't be returned for a refund. |
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These comparisons use published specifications, not head-to-head tests. Prices and terms are dated. Unknown costs are not zero. Check the exact variant before you buy.