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Scan for outdated or missing drivers - takes under a minuteDriver Scan →Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Oura Ring 4 launched in the U.S. at $349 on October 3, 2024, with shipping beginning October 15. Its biggest changes were adaptive sensing, a flatter and fully titanium interior, and a claimed battery life of up to eight days—not a wholly new set of health measurements. As of August 18, 2026, Ring 4 is a previous-generation option: Oura lists Ring 5 from $399 and Ring 4 from $349. At only $50 apart, Ring 5 is the stronger default for many new buyers; Ring 4 makes more sense if its price is discounted enough or you specifically prefer its finish or fit.
What Oura announced in October 2024
Oura announced Ring 4 on October 3, 2024. U.S. preorders opened that day at a starting price of $349, and shipping began October 15. It replaced the Gen 3 Heritage and Horizon styles with one main Ring 4 design offered in different finishes and sizes. Oura’s launch announcement positioned Smart Sensing as the central upgrade.
| # | Preview | Product | Price | |
|---|---|---|---|---|
| 1 |
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OURA Ring 4 Smart Ring - Silver - Size 9 | $349.00 | Buy on Amazon |
| 2 |
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OURA Ring 4 Smart Ring - Stealth - Size 11 | $349.00 | Buy on Amazon |
| 3 |
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OURA Ring 4 Smart Ring - Silver - Size 8 | $349.00 | Buy on Amazon |
| 4 |
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10 Pack Ring Cover Compatible with Oura Ring Gen 4/4 Ceramic/Gen 3 | $6.99 | Buy on Amazon |
| 5 |
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OURA Ring 4 Smart Ring - Silver - Size 10 | $349.00 | Buy on Amazon |
That launch price is historical, not the whole cost of ownership. Oura’s U.S. store lists Ring 4 from $349 and Ring 5 from $399 as of August 18, 2026; individual finish prices and discounts vary. Check Oura’s current store listings before buying.
What Smart Sensing changes
Oura says Ring 4 dynamically selects the best available signal path for the wearer, adapting to differences in finger shape and physiology. Oura counted 18 available signal pathways on Ring 4, compared with eight on Gen 3. The practical aim is more consistent collection when the ring shifts or one sensor position produces a weaker signal—not a new category of measurement. Oura’s Ring 4 product page describes the system.
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#1 Best Overall
- ACCURACY - SMART SENSING - Oura tracks over 50 health metrics, including sleep, activity, stress, heart health, and women’s health metrics. Oura Ring 4 is powered by Smart Sensing, which adapts to you — delivering accurate, continuous data, day and night
- ACCURATE SIZING ESSENTIAL - Oura Ring 4 uses unique sizing different from standard jewelry rings; use the Oura Ring 4 Sizing Kit to find your perfect fit before purchasing
- LONG LASTING BATTERY - With up to 8 days of battery life, no screens and no vibrations, Oura Ring 4 allows you to focus on the present. From a workout to a night out — you’re free to forget it’s on. Until you start getting compliments
- OURA MEMBERSHIP - First month of membership is included with purchase, for new members only. Subscription is 5.99/mo afterwards. Membership is tied to your account via the Oura App, not your physical ring
- HSA/FSA ELIGIBLE - We can accept HSA or FSA funds for the following: Oura Ring, additional chargers, and shipping
Oura also reported a 120% improvement in blood-oxygen signal quality versus Gen 3 and a 30% increase in average overnight SpO2 measurement accuracy. Those are manufacturer comparison claims, not independent results or a promise that every wearer will get readings that are 30% more accurate. The design suggests fewer interruptions or poor readings when contact changes, but it does not establish that outcome for every person or situation.
What changed in the hardware—and what did not
Flatter, fully titanium construction
Ring 4 has a fully titanium construction, including a non-allergenic titanium inner shell, with sensors recessed approximately 0.3 mm into the interior. Its official specifications list a 7.9 mm width, approximately 2.88 mm thickness, and a weight of 3.3–5.2 grams depending on size. The flatter inside is intended to make continuous wear more comfortable and reduce the need for precise sensor alignment. WIRED likewise described Ring 4 as more wearable than its predecessor in its review.
Durability and water use
Oura rates the ring water-resistant to 100 meters (328 feet) and says it is suitable for swimming, sauna use, and water sports, but not diving. Its listed operating temperature range is –10 to 54 ºC (14 to 129 ºF). See Oura’s Ring 4 specifications for the full hardware details.
Rank #2
- ACCURACY - SMART SENSING - Oura tracks over 50 health metrics, including sleep, activity, stress, heart health, and women’s health metrics. Oura Ring 4 is powered by Smart Sensing, which adapts to you — delivering accurate, continuous data, day and night
- ACCURATE SIZING ESSENTIAL - Oura Ring 4 uses unique sizing different from standard jewelry rings; use the Oura Ring 4 Sizing Kit to find your perfect fit before purchasing
- LONG LASTING BATTERY - With up to 8 days of battery life, no screens and no vibrations, Oura Ring 4 allows you to focus on the present. From a workout to a night out — you’re free to forget it’s on. Until you start getting compliments
- OURA MEMBERSHIP - First month of membership is included with purchase, for new members only. Subscription is 5.99/mo afterwards. Membership is tied to your account via the Oura App, not your physical ring
- HSA/FSA ELIGIBLE - We can accept HSA or FSA funds for the following: Oura Ring, additional chargers, and shipping
Same broad wellness focus
Ring 4 tracks familiar Oura categories rather than introducing an entirely new measurement platform: sleep, heart rate, heart-rate variability, respiration, temperature trends, blood oxygen, activity, stress, and recovery. Oura also lists features such as Cardiovascular Age, Cardio Capacity/VO2 Max, metabolic-health tools, cycle and women’s-health features, and integrations including Strava. Which features are available can depend on country, account, membership, and app conditions.
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1Repair Windows errors before they cause bigger problems2Fix the driver behind crashes, sound loss and screen glitches3Clear out junk files and repair common Windows errorsA ring is also a different tool from a smartwatch. Ring 4 has no screen for notifications or live workout controls and does not replace a watch with on-device interaction or GPS. It is best suited to discreet, continuous wellness tracking, particularly sleep and recovery.
Battery life in everyday use
Oura specifies a typical battery range of five to eight days and a typical charging time of 20–80 minutes, depending on starting charge. “Up to eight days” is the upper end, not a guaranteed result. In the cited battery testing assumptions, Oura used all-day wear, one hour of automatic activity heart-rate capture per day, and eight hours of sleep tracking, with blood oxygen sensing disabled. Ring size, settings, activity, feature use, and battery age can all affect runtime. Oura’s battery guidance explains the variability.
Rank #3
- ACCURACY - SMART SENSING - Oura tracks over 50 health metrics, including sleep, activity, stress, heart health, and women’s health metrics. Oura Ring 4 is powered by Smart Sensing, which adapts to you — delivering accurate, continuous data, day and night
- ACCURATE SIZING ESSENTIAL - Oura Ring 4 uses unique sizing different from standard jewelry rings; use the Oura Ring 4 Sizing Kit to find your perfect fit before purchasing
- LONG LASTING BATTERY - With up to 8 days of battery life, no screens and no vibrations, Oura Ring 4 allows you to focus on the present. From a workout to a night out — you’re free to forget it’s on. Until you start getting compliments
- OURA MEMBERSHIP - First month of membership is included with purchase, for new members only. Subscription is 5.99/mo afterwards. Membership is tied to your account via the Oura App, not your physical ring
- HSA/FSA ELIGIBLE - We can accept HSA or FSA funds for the following: Oura Ring, additional chargers, and shipping
Charging is part of the routine: taking the ring off overnight can leave gaps in sleep and recovery data. A reviewer at WIRED reported several days of use with substantial activity while retaining meaningful charge, but that is one person’s experience, not a reliable forecast for every owner.
Membership is part of the real price
In the U.S., Oura Membership costs $5.99 per month or $69.99 per year, and new members get the first month included with a new ring purchase. Membership is tied to the Oura account, not the physical ring. Oura says many of the deeper analyses and personalized insights—including the fuller sleep, readiness, stress, and cardiovascular experience—require active membership. The available feature set and terms can differ by supported country and account status; consult Oura’s membership details.
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For scale, a $349 Ring 4 plus a $69.99 annual membership is $418.99 before tax when counted as a hardware purchase plus a full annual plan. That is not necessarily the first-year bill: Oura includes the first month for new members, so the timing and amount of initial membership billing can differ. At the listed U.S. rates, 24 monthly payments total $143.76 before tax; two annual payments total $139.98. The ring may still function in a limited capacity without paid membership, but membership is effectively part of the product’s price if you want Oura’s full analysis and insights.
Rank #4
- 【Compatibility】The silicone ring cover compatible with Oura Ring Gen 4/4 Ceramic, Oura Ring Gen 3 Horizon/Heritage. It is available in a variety of sizes. Please choose S for size 4/5/6/7, M for size 8/9/10/11, L for 12/13/14/15. (Note: Ring is NOT included)
- 【Charging Hole Design】Specially design for charging without removing the cover. The ring cover is designed with a charging hole for the ring dimple. Align the hole of the ring protector with the ring dimple. You can charge your ring without any hassle of taking ring cover on and off.
- 【Anti-scratch】The silicone ring protector fully encases the smart ring for optimal protection. It is essential for protecting your Oura ring from scratches, dents while working out, doing chores, lifting weights, sporting events and daily wear.
- 【Comfortable & Skin-Friendly】The Oura ring cover is made from premium soft and odorless high quality silicone. It is comfortable & skin-friendly, breathable & washable, durable & elastic. It won't cause allergies or discomfort to your fingers.
- 【Multi Color Choice】Package includes many ring protectors in different colors. You can change the ring cover for your smart ring every day according to your mood or outfit. It only takes a few seconds to give your smart ring a new look.
Ring 4 vs. Gen 3: who should upgrade?
Upgrade if the hardware is the problem
- Your Gen 3 battery has deteriorated enough to disrupt regular wear.
- The older ring’s interior sensor bumps bother you, or you have recurring fit or contact issues.
- You value the potential for more continuous sensing and improved overnight SpO2 measurement.
- You want Ring 4’s titanium design, available sizing, or a finish you prefer.
Keep Gen 3 if it still does the job
- Your current ring is comfortable, holds a charge, and gives you usable data.
- You hoped for substantially new health measurements rather than hardware refinements.
- You would be paying $349 or more plus membership for improvements you do not particularly need.
Ring 4 is a meaningful refinement when comfort, battery condition, or signal consistency is a real pain point. If Gen 3 is working well, the upgrade is harder to justify on features alone.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Ring 4 vs. Ring 5 for a new buyer
Oura’s current U.S. store lists Ring 5 from $399 and Ring 4 from $349; selected finishes may cost more or be discounted. Oura lists Ring 5 with six to nine days of battery life, a smaller and lighter design, and redesigned sensing hardware. See the Ring 5 product page for its current details.
| Consideration | Oura Ring 4 | Oura Ring 5 |
|---|---|---|
| U.S. starting price listed August 18, 2026 | From $349; finish prices and discounts vary (Oura store) | From $399; selected finishes listed at $499 (Oura product page) |
| Battery claim | Typically five to eight days (Oura specifications) | Six to nine days, as listed by Oura (Oura product page) |
| Design and sensing | Fully titanium; recessed sensors; Smart Sensing | Smaller, lighter design and redesigned sensing hardware, per Oura |
At the entry prices observed on August 18, 2026, the difference is $50. For a buyer keeping the ring for several years, Ring 5 is the more compelling default if the prices and features shown at checkout remain similar. Ring 4 can still be the better buy if a particular finish or size suits you, or its discount makes the gap substantial.
Best Value
- ACCURACY - SMART SENSING - Oura tracks over 50 health metrics, including sleep, activity, stress, heart health, and women’s health metrics. Oura Ring 4 is powered by Smart Sensing, which adapts to you — delivering accurate, continuous data, day and night
- ACCURATE SIZING ESSENTIAL - Oura Ring 4 uses unique sizing different from standard jewelry rings; use the Oura Ring 4 Sizing Kit to find your perfect fit before purchasing
- LONG LASTING BATTERY - With up to 8 days of battery life, no screens and no vibrations, Oura Ring 4 allows you to focus on the present. From a workout to a night out — you’re free to forget it’s on. Until you start getting compliments
- OURA MEMBERSHIP - First month of membership is included with purchase, for new members only. Subscription is 5.99/mo afterwards. Membership is tied to your account via the Oura App, not your physical ring
- HSA/FSA ELIGIBLE - We can accept HSA or FSA funds for the following: Oura Ring, additional chargers, and shipping
Alternatives for different priorities
There is no single best ring for every buyer. Compare the app, compatibility, return terms, and total ownership cost—not only hardware price. Alternative prices and current model details are not established here, so check each maker’s live product information before deciding.
- Samsung Galaxy Ring: Consider it if you already rely on Samsung’s Galaxy ecosystem and want ring-and-watch integration. Samsung Galaxy Ring.
- RingConn: Worth comparing if subscription-free ownership and battery life are priorities; weigh those against the app and insights you prefer. RingConn.
- Ultrahuman Ring AIR: Relevant if avoiding a recurring subscription is central to your choice; compare app quality, recovery features, battery, warranty, and long-term support. Ultrahuman Ring AIR.
- Amazfit Helio Ring: A possibility for Amazfit users looking for a lower-cost entry point, subject to checking current ecosystem compatibility and feature maturity. Amazfit.
Fit, compatibility, and buying safely
- Size carefully: Correct fit affects both comfort and sensor contact. Oura sizing is not interchangeable with ordinary jewelry sizing, so use the Oura sizing process rather than guessing. Oura supports iOS and Android; features and integrations can vary.
- Check the seller’s terms: Oura warns that unofficial purchases may not receive warranty coverage and that device restrictions can apply to rings linked to reported issues. Review Oura’s purchase guidance before buying secondhand or from a marketplace.
- Read the return policy: Retail returns and refunds are handled under the retailer’s policies, which may differ from Oura’s. If you return a ring, cancel membership billing separately; the subscription is account-linked. See Oura’s retail-purchase guidance.
What Ring 4 can—and cannot—tell you about health
Oura Ring 4 is a wellness wearable, not a replacement for a clinician or a diagnostic device. Fit, movement, skin characteristics, illness, alcohol, medication, and other factors can affect wearable measurements and estimates. Oura’s comparative SpO2 claim does not establish clinical accuracy for every user or condition. Use the data for general trends, and do not make urgent medical decisions solely from a ring.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
