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Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Oura Ring 4’s main differences from Gen3 are its fully titanium interior, recessed sensors, Smart Sensing platform, and wider size range. Gen3 already has a substantial sensor platform, and Oura brought several software updates announced with Ring 4 to Gen3 members too, so upgrading is most compelling if you want Ring 4’s design or need to replace an aging ring. If you are buying new in 2026, compare Ring 4 with the newer Ring 5 and check current prices.
The short answer
Keep your Gen3 if it fits comfortably, its battery works for your routine, and you can use the features you want. Consider Ring 4 if you prefer its all-titanium inner surface and recessed sensors, need a size outside Gen3’s range, or your current ring’s condition makes replacement worthwhile.
| # | 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 |
Ring 4 is not a completely new software experience: Oura said several updates, including improvements to Automatic Activity Detection, Cycle Insights, and Daytime Stress context, would roll out to both Ring 4 and Gen3 members. For a new purchase, compare Ring 4 with Ring 5. Oura’s store listed Ring 4 from $349 and Ring 5 from $399 in the United States when checked on October 7, 2026; prices and inventory can change.
Oura Ring 4 vs. Gen3: key differences
| Feature | Oura Ring Gen3 | Oura Ring 4 | What it means |
|---|---|---|---|
| Interior design | Titanium with a seamless, nonmetallic inner molding | Fully titanium, with recessed interior sensors | The inner surface and sensor design are the clearest physical distinction. Comfort preferences vary. |
| Sensing | Green, red, and infrared LEDs, temperature sensing, an additional infrared sensor to help compensate for misalignment, and accelerometers | Smart Sensing, designed to adapt the signal path to the wearer | Ring 4 revises the sensing platform; Gen3 already had substantial sensor hardware. |
| Sizes | 6–13 | 4–15 | Ring 4 fits a wider size range. Oura says sizing differs by generation, so use the correct sizing kit. |
| Battery guidance | Up to seven days | Typically five to eight days | These are Oura estimates, not head-to-head test results. Use, settings, size, and battery age affect runtime. |
| Offline storage | No comparable current figure confirmed in the reviewed sources | Launch announcement said up to two weeks, depending on use | Do not assume the launch estimate guarantees a particular storage duration. |
| Charger | Gen3 dock; compatible with Gen3 and Gen2 | Ring 4-specific dock | Chargers are size- and generation-specific; a Gen3 charger does not work with Ring 4. |
| Software updates | Received several updates announced with Ring 4 | Received those updates too | Ring 4 is primarily a hardware and design choice, not a requirement for those shared updates. |
| Current alternative | Discontinued and no longer sold through Oura’s store | Listed from $349 in the U.S. when checked October 7, 2026 | Ring 5 is also listed, from $399; compare current products and prices before buying. |
Sources: Oura’s Ring 4 announcement, previous-generation information, Ring 4 support information, and charger compatibility guidance.
#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
What changed in Ring 4?
Fully titanium interior and recessed sensors
Gen3 has a titanium exterior and a seamless, nonmetallic inner molding. Ring 4 is fully titanium and has recessed sensors on the inside. That is a meaningful materials and design difference. Oura presents Ring 4 as more comfortable, but comfort is personal; try the right size and do not treat that claim as an independently established result.
Smart Sensing, not a first generation of health sensing
Oura calls Ring 4’s sensing platform Smart Sensing and says it is designed to adapt the signal path to the wearer. Gen3 already had green and red LEDs, infrared LEDs, temperature sensing, an additional infrared sensor to help compensate for misalignment, and accelerometers. The distinction is a revised sensing platform and layout, not that Gen3 lacked health-sensing hardware.
Oura’s product announcement describes Ring 4 as its most personal, accurate, and comfortable smart ring. Treat that as Oura’s positioning, not as an independent head-to-head finding. The research reviewed for this article did not identify an independent Ring 4-versus-Gen3 study establishing a general accuracy or comfort advantage.
Wider size range
Gen3 comes in sizes 6–13, while Ring 4 spans sizes 4–15. Oura warns that sizing differs between generations, so do not assume a Gen3 size transfers exactly. Use a sizing kit for the generation you plan to buy.
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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
Is it worth upgrading from Gen3?
The decision depends more on your current ring and priorities than on a promise of a dramatically different app.
- Compare fit and design. Decide whether Ring 4’s all-titanium inner surface, recessed sensor profile, finish options, or wider size range matter to you. Re-size with the correct generation’s kit.
- Check your Gen3’s condition. Battery performance can decline with age. A weakening battery or damaged ring changes the value calculation more than a Gen3 that still meets your needs.
- Consider what software you expect. Oura extended several updates announced with Ring 4 to Gen3. Do not buy Ring 4 solely for those updates.
- Calculate total cost. Include membership if you do not already have it. Oura says membership follows your account and transfers when the new ring is paired.
- Compare Ring 5 if buying new. Ring 5 is the newer model. Compare price, sizing, battery guidance, and design before deciding.
Keep Gen3 if it fits comfortably, its battery works for your routine, and the features you use are available. Consider Ring 4 if you want its design, need its size range, or need to replace an aging ring. Compare Ring 5 before buying new, since it is the current model.
Battery, storage, and chargers
Oura’s current battery guidance gives Ring 4 a typical estimate of five to eight days and Gen3 an estimate of up to seven days. The Ring 4 launch announcement said up to eight days. These are qualified estimates, not independent comparisons; actual runtime depends on use, settings, ring size, and battery age. Rechargeable battery capacity can decline over time.
Oura’s Ring 4 launch announcement said the ring could store up to two weeks of data, depending on use. The reviewed official material does not provide a comparable Gen3 storage figure, so there is not enough evidence here to make a current, generation-to-generation storage comparison.
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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
Chargers are size-specific. Oura’s current compatibility chart lists Ring 4 chargers for Ring 4 only and Gen3 docks as compatible with Gen3 and Gen2. Do not assume a Gen3 dock will charge Ring 4. Check that a used ring includes its correct, working charger before buying.
Membership and account transfer
Oura’s current U.S. membership price is $5.99 per month or $69.99 per year. Without membership, Oura limits app access to daily scores and basic functions. Prices and feature availability may vary by region and change over time.
Oura says membership is attached to the account and transfers when you pair a new ring. Use your existing account so your membership benefits and previously synced data remain associated with it. See Oura’s membership information.
Should you buy a used Oura Ring Gen3?
Gen3 is discontinued, and Oura says Gen3 rings and chargers are no longer available through its store. A used ring may still suit someone who finds a good price, but assess its current condition rather than relying on its original specifications.
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- 【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.
- Ask how long the ring currently lasts after a full charge; battery capacity can decline with age.
- Confirm the exact Gen3 size and that the correct charger is included and works.
- Confirm the ring can be paired with your account, and ask about its device history.
- Check the seller’s return policy and warranty coverage before buying.
Oura recommends buying through authorized channels. Review its purchase guidance before relying on a used listing.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Frequently Asked Questions
What is the main difference between Oura Ring 4 and Gen3?
Ring 4 has a fully titanium interior with recessed sensors, a Smart Sensing platform, and sizes 4–15. Gen3 has a nonmetallic inner molding, its own substantial sensor platform, and sizes 6–13.
Should I upgrade from Gen3 to Ring 4?
Consider Ring 4 if you want its design, need a size outside Gen3’s range, or your Gen3 is aging or damaged. Keep Gen3 if it fits comfortably, its battery works for your routine, and it provides the features you need.
Is Ring 4 more comfortable or accurate than Gen3?
Oura positions Ring 4 as more comfortable and accurate, but the reviewed research did not identify an independent head-to-head study establishing a general advantage. Comfort is personal, and Smart Sensing is designed to adapt the signal path rather than guarantee better results for every wearer.
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- 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
Can I use my Gen3 charger with Ring 4?
No. Oura’s compatibility information lists Ring 4 chargers for Ring 4 only and Gen3 docks as compatible with Gen3 and Gen2. Chargers are also size-specific.
Does my Gen3 size transfer to Ring 4?
Not necessarily. Oura says sizing differs between generations. Use a Ring 4 sizing kit rather than assuming your Gen3 number will fit the same.
Do Gen3 owners get Ring 4 software updates?
Oura said that several updates announced with Ring 4, including improvements to Automatic Activity Detection, Cycle Insights, and Daytime Stress context, would roll out to Gen3 members too.
Does my Oura Membership transfer when I upgrade?
Oura says membership follows the account and transfers when you pair the new ring. Use the same account to keep your membership benefits and previously synced data associated with it.
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Should I buy Ring 4 or Ring 5?
Ring 5 is the newer model, so compare it with Ring 4 before buying new. Oura listed Ring 4 from $349 and Ring 5 from $399 in the U.S. on October 7, 2026, but prices and inventory can change.
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.
