Every year a wearable comes along that reviewers say is a “game changer,” and most of the time it’s just a slightly better version of last year’s thing. Oura Ring 5 is different, and the difference is measured in millimeters. Oura took its flagship smart ring, shrank it by 40%, kept every sensor, and somehow added battery life in the process. On paper that sounds like a spec sheet footnote. On your finger, it changes everything about living with a health-tracking ring.
We’ve spent the weeks since launch digging into the Oura Ring 5, comparing notes from long-term testing, early reviews, and Oura’s own documentation to answer one question: is this the best smart ring of the year, or just the smallest? Here’s our full Oura Ring 5 review.
Oura Ring 5 Specs
| Specification | Details |
| Material | Titanium with PVD scratch-resistant coating |
| Water Resistance | IP68, water resistant up to 100 meters |
| Available Sizes | 6 to 13 (availability may vary by region and finish) |
| Color Options | Silver, Black, Gold, Stealth, Brushed Silver, Deep Rose |
| Battery Life | Approximately 6–9 days, depending on ring size and usage |
| Charging | Wireless charging dock included; optional portable charging case available |
| Connectivity | Bluetooth, compatible with iOS and Android devices |
| Sensors | Optical heart rate sensor, blood oxygen (SpO₂), skin temperature sensor, motion/accelerometer |
| Health Metrics Tracked | 50+ metrics including sleep, activity, readiness, stress, resilience, heart health, and women’s health |
| Companion App | Oura App for iOS and Android |
| Subscription | Oura Membership required for full access to advanced insights and health features |
What Is Oura Ring 5?
If you’re new to the category, a quick primer. The Oura Ring 5 is a smart ring, a wearable health tracker built into a piece of jewelry instead of a watch. It sits on your finger and quietly measures your heart rate, heart rate variability (HRV), body temperature, blood oxygen, movement, and sleep and feeds all of that into the Oura app on your phone.
Oura is the company that made smart rings a real category in the first place, and the Ring 5 is its fifth-generation flagship. This time the pitch is simple: the world’s smallest smart ring. At 6.09mm wide and 2.28mm thick, it’s 40% smaller than the Oura Ring 4 and weighs as little as 2 grams. For the first time, an Oura ring can genuinely pass for a plain wedding band at a glance.
The finger, it turns out, is a great place to measure health data. Arteries in the finger give optical sensors a pulse signal far stronger than what wrist wearables pick up, which is a big part of why smart rings punch above their weight on sleep and recovery tracking.
Oura Ring 5 at a glance:
- 40% smaller than the Oura Ring 4, which is the world’s smallest smart ring.
- 6 to 9 days of battery life, a day more than the predecessor.
- Titanium with new scratch-resistant PVD coating, waterproof to 100m.
- Sensors with stronger LEDs and 12 signal pathways for better accuracy.
- New software: Health Radar, Live Activity tracking, GLP-1 insights, and Locate.
- Starts at $399, plus a membership at $5.99/month or $69.99/year.
Oura Ring 5 Price and Release Date
Oura announced the Ring 5 on May 28, 2026, with shipping on June 4, 2026. It is available directly from Oura and retailers such as Amazon and Best Buy.
Pricing is where the first eyebrow goes up. The Oura Ring 5 is $399/£399/€429 for the Silver and Black finishes, a $50 increase over the Ring 4 starting price. Want one of the premium finishes (Gold, Stealth, Brushed Silver or the new Deep Rose)? That’s $499. The same titanium, same sensors, different coating. As Engadget put it in its review, you are paying $100 for paint.
Then there is the membership. If one is going to get the full feature set, it requires an Oura subscription of $5.99 per month or $69.99 per year. Without it, the ring shows you only the bare basics, so the subscription is quite a requirement. Factor that into the cost of ownership: roughly $470 for your first year at the absolute minimum.
There is also an optional $99 charging case, which is a matchbox-sized aluminum box that holds about a month of extra charge for travel. Nice to have, but annoying that it’s size-specific.
Design and Build: The Whole Story Is the Size
Smart rings were already small, so shaving 40% off one appears like marginal gains. It isn’t. The Ring 4 was comfortable but unmistakably a gadget, thick enough that strangers would ask about it in checkout lines. The Ring 5 reads as jewelry.
The numbers: 6.09mm wide, 2.28mm thick, and 2 to 2.69 grams depending on size. Users who felt that the Oura rings have been too bulky, especially for those with slimmer fingers, have said this is the one they’ve been waiting for. One Android Authority tester said the Oura ring was the first that didn’t feel like a man’s wedding band.
The build quality is there too:
- Non-allergenic titanium inside and out, with a BPA-free inner surface.
- New stronger PVD coating for scratch resistance over the Ring 4.
- 100m water resistance (IP68), suitable for swimming, showers, and even the sauna (but not diving).
- Six finishes: Silver, Black, Gold (re-designed in a lighter, more true-gold shade), Stealth, Brushed Silver, and the new copper-toned Deep Rose.
Sizing has changed, and it’s a good thing for your purchase. The Ring 5 in US sizes 6 to 13 is different from the Ring 4, with size 5 missing from the lineup. Order the free Ring 5 sizing kit rather than assuming your old size carries over. The fit matters more on a ring than a watch, because sensor contact is dependent on it.
Oura Ring 5 Features: What It Actually Tracks
The core Oura experience is about three daily scores, each out of 100, that the app builds from your overnight and daytime data.
Sleep Score
Sleep tracking is still the thing Oura does better than almost anyone. The sleep score measures your sleep quality, HRV, nighttime movement, sleep regularity, and time spent in deep, REM, and light sleep. The ring also monitors blood oxygen levels overnight to flag breathing disturbances, and the app tells you when it’s time to wind down. If you buy a sleep tracking ring for one reason, this is it.
Readiness Score
The readiness score (think of it as a recovery score) aggregates temperature trends, resting heart rate, HRV and recent sleep to tell you how much your body has in the tank today. This is Oura’s quietly brilliant feature, and it’s often smarter than the sleep score alone. Engadget’s reviewer described a sweltering, sleepless night during a UK heatwave where the sleep score came back a flattering 84, but the readiness score dropped to 56 because the ring caught the elevated resting heart rate and depressed HRV. The body knew, and so did the ring.
Temperature tracking also means Oura can flag when you might be getting sick a day or two before you feel it, and it underpins the women’s health features, including cycle tracking and ovulation insights.
Activity Score and Fitness Tracking
The activity score tracks movement, calorie burn, and the balance between exertion and recovery and a personalized daily goal that adjusts based on how recovered you are. The ring automatically detects over 40 activity types, and Oura says detection is now better for low-motion workouts like yoga and Pilates.
Live Activity tracking is new this generation: you can start a workout on the app and monitor pace, distance, and heart rate in real time, along with connecting third-party heart rate monitors. Well, yes, it’s a real step toward becoming a fitness tracking ring instead of just a passive logger, but let’s be honest about the ceiling here. If you’re a serious runner or cyclist, a ring without a screen will never replace a Garmin. DC Rainmaker’s review makes this point well: Oura is excellent at sleep and recovery, and only okay at sports.
Heart Health and the New Health Radar
The heart health suite tracks daytime and nighttime heart rate and estimates your cardiovascular age relative to your actual age. The Ring 5 is launched alongside Health Radar, a set of proactive features that include nighttime blood pressure trend signals and sleep-related breathing insights. These aren’t medical diagnoses, but they’re the kind of early-warning signals that make a wearable health tracker feel useful rather than decorative.
There’s also a new GLP-1 insights feature for people on medications like Ozempic or Wegovy to bring dosing, side effects, and weight trends into one place. Niche, but a good read of where health tracking is going in 2026. And a Locate feature for finding a misplaced ring and a new time-based data deletion option for the privacy-conscious.
Oura Ring 5 Battery Life
Battery life is one of the clearer upgrades on the Ring 5:
- Smallest ring sizes: around 6 days per charge.
- Largest ring sizes: up to 9 days per charge.
- A mid-size ring (tested by several reviewers) lasted close to 8 days, about two days longer than the equivalent Ring 4.
As the ring also shrank by 40%, it is not only a real engineering accomplishment but also an impressive achievement to get the battery life to be longer.
Oura Ring 5 vs Oura Ring 4: Should You Upgrade?
If you already own an Oura Ring 4, the upgrade decision is down to a few factors:
- Size and comfort: If the bulk of the Ring 4 has ever bothered you, catching on pockets, digging in during workouts, the Ring 5 completely solves that.
- Battery life: A small, but real improvement, useful for frequent travelers.
- New software: Oura Advisor, expanded women’s health tracking, and GLP-1 insights are available to Ring 5 owners, but some might eventually be integrated into Ring 4 via app updates.
- Core functionality: The basic sleep, readiness, and activity tracking is largely the same as the Ring 4, this is a hardware update, not an overhaul.
If you are happy with your ring and don’t care about the slightly larger size, the upgrade isn’t necessary. But if you’re buying a smart ring for the first time, the Ring 5 is the clear starting point.
Pros and Cons
Pros:
- Significantly smaller and more comfortable than any previous Oura ring.
- Longer battery life despite the reduction in size.
- More scratch-resistant coating.
- Good sleep, readiness, and accurate activity tracking.
- New AI coaching and expanded women’s health features.
Cons:
- Needs paid monthly or annual membership to unlock features.
- Premium colors cost $100 more for the same hardware.
- Not built for serious sports/fitness tracking compared to a dedicated watch.
- Scratch-resistant coating is not scratch-proof.
Final Verdict: Is the Oura Ring 5 the Best Smart Ring of the Year?
Based on the consensus among reviewers who’ve tested it extensively, the Oura Ring 5 is currently considered to be the most refined, comfortable, and capable smart ring on the market. It doesn’t reinvent what a smart ring does, sleep, readiness, and activity tracking are still at the heart of the experience, but it certainly changes how it feels to wear one every day.
And for health information that isn’t available on a screen, notifications, or the bulk of a smartwatch, the Oura Ring 5 seems like the best in the world right now. The only big issue that I have about it is the subscription cost, which must be weighed up in every case.
Frequently Asked Questions (FAQs)
Q. What is the Oura Ring 5?
A.Oura’s latest smart ring is a titanium wearable that monitors sleep, activity, readiness, stress, and heart health with optical and temperature sensors and sends their data to a companion smartphone app.
Q. When was the Oura Ring 5 released?
A. The Oura Ring 5 was announced on May 28, 2026, with preorders starting the same day and shipping on June 4, 2026.
Q. How much does Oura Ring 5 cost?
A. The base colors (Silver and Black) start at $399; premium finishes (Gold, Stealth, Brushed Silver, Deep Rose) are $499. A separate Oura membership (around $6/month or $70/year) is required to get most features.
Q. How long does the Oura Ring 5 battery last?
A. Battery life ranges from 6 to 9 days depending on the ring size, which is a step up from the Oura Ring 4’s 5–8 days.
Q.Do you recommend Oura Ring 5 over Oura Ring 4?
A. If comfort and size are your big concerns, yes, the Ring 5 is about 40% smaller and more comfortable. If you like your Ring 4 and don’t need the size reduction, the tracking experience is so similar that it isn’t the reason to upgrade.
