Quick wins for a faster PC:
Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Oura Ring 5 is a screenless smart ring designed to track sleep, activity, readiness, stress, and other health signals through the Oura app. Oura describes features for workouts, but the research available here does not independently establish Ring 5’s workout accuracy or show that it replaces a dedicated sports watch.
Think of it as a ring-based wellness tracker, not a watch with a screen on your finger. Before buying, consider its membership-dependent app features, generation-specific sizing, and the gap between Oura’s product claims and independently demonstrated results.
What does Oura Ring 5 track?
Oura describes Ring 5 as a titanium smart ring for sleep, activity, fitness readiness, stress, heart health, and women’s health. Its support information lists an accelerometer, temperature sensor, two tri-LED emitters, and two photodetectors. Oura lists app features including sleep analysis, heart-rate tracking, temperature monitoring, blood-oxygen sensing, stress, activity detection, cardiovascular age, cardio-capacity estimates, women’s-health features, and reports. Many of these features require an active membership.
Oura’s software is intended to present measurements and patterns in its app. That is different from a workout device built around a screen and live exercise metrics. The research reviewed for this article does not establish independent Ring 5 performance validation.
Free tools Windows power users keep installed
One-click scans. No signup required.
#1 Best Overall
- THE WORLD’S SMALLEST SMART RING - 40% smaller than the previous generation, Oura Ring 5 is thinner, lighter and smaller than ever. The updated all-titanium design is more scratch-resistant and comfortable than ever
- SIZING IS ESSENTIAL - Oura Ring 5 uses unique sizing different from standard jewelry rings and other Oura Ring generations; use the Oura Ring 5 Sizing Kit to find your perfect fit before purchasing
- EVERYDAY HEALTH SENSING - Oura tracks over 50 health metrics, including sleep, activity, stress, heart health, metabolic health and women’s health metrics. Oura seamlessly integrates with over 40 apps including Natural Cycles, Strava, & more
- 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
- REBUILT FOR GREATER ACCURACY - Oura Ring 5 has been re-engineered and reconfigured, providing more precise personal health data. Larger, smarter sensors bring research-grade accuracy—all in Oura’s smallest form factor yet
Is Oura Ring 5 good for workouts?
Oura announced Live Activity Tracking, which lets members start a workout in the app and see real-time pace, distance, and heart-rate data through phone lock-screen widgets. Oura said the global rollout would begin June 4, 2026, for members with Ring Gen3 and newer; the announcement did not describe it as a Ring 5-exclusive hardware feature.
Oura also announced changes to Automatic Activity Detection. The available research does not establish how accurately Ring 5 records particular workouts or show that it can replace a dedicated sports watch. Check Oura’s current feature availability for your region and device before relying on a feature.
What changed from Oura Ring 4?
Oura describes Ring 5 as 40% smaller in volume than Ring 4. Its listed dimensions are also narrower and thinner. These are specification differences, not proof of better real-world accuracy or workout performance.
Rank #2
- THE WORLD’S SMALLEST SMART RING - 40% smaller than the previous generation, Oura Ring 5 is thinner, lighter and smaller than ever. The updated all-titanium design is more scratch-resistant and comfortable than ever
- SIZING IS ESSENTIAL - Oura Ring 5 uses unique sizing different from standard jewelry rings and other Oura Ring generations; use the Oura Ring 5 Sizing Kit to find your perfect fit before purchasing
- EVERYDAY HEALTH SENSING - Oura tracks over 50 health metrics, including sleep, activity, stress, heart health, metabolic health and women’s health metrics. Oura seamlessly integrates with over 40 apps including Natural Cycles, Strava, & more
- 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
- REBUILT FOR GREATER ACCURACY - Oura Ring 5 has been re-engineered and reconfigured, providing more precise personal health data. Larger, smarter sensors bring research-grade accuracy—all in Oura’s smallest form factor yet
| Specification | Oura Ring 5 | Oura Ring 4 |
|---|---|---|
| Dimensions | 6.09 mm wide; 2.28 mm thick | 7.9 mm wide; about 2.88 mm thick |
| Volume comparison | Oura describes it as 40% smaller by volume than Ring 4 | — |
| Photodetectors | Two | Three |
| Stored data | Up to three days | Up to seven days |
| Typical battery estimate | 6–9 days | 5–8 days |
| Available sizes | 6–13 | 4–15 |
These specifications are listed by Oura. Battery life is an estimate: Oura says actual results vary with ring size, settings, activity, battery age, and use. Oura also says its redesigned sensor domes and signal pathways are intended to improve skin contact and consistency; the research reviewed here does not independently verify those claims.
Fit and sizing: use the Ring 5 sizing kit
Ring 5 comes in sizes 6 through 13, while Ring 4 comes in sizes 4 through 15. Oura says sizing differs slightly between generations, so do not assume that your Ring 4 size will fit Ring 5. Use the Ring 5 sizing kit before ordering.
- Get the sizing kit for the Ring 5 generation.
- Try the candidate size and check that it is comfortable and secure.
- Follow Oura’s current sizing guidance before choosing a final size.
Comfort and signal quality can depend on fit. A smaller profile may appeal to people who found a previous ring bulky, but the listed dimensions alone do not establish how comfortable it will feel for you.
Rank #3
- THE WORLD’S SMALLEST SMART RING - 40% smaller than the previous generation, Oura Ring 5 is thinner, lighter and smaller than ever. The updated all-titanium design is more scratch-resistant and comfortable than ever
- SIZING IS ESSENTIAL - Oura Ring 5 uses unique sizing different from standard jewelry rings and other Oura Ring generations; use the Oura Ring 5 Sizing Kit to find your perfect fit before purchasing
- EVERYDAY HEALTH SENSING - Oura tracks over 50 health metrics, including sleep, activity, stress, heart health, metabolic health and women’s health metrics. Oura seamlessly integrates with over 40 apps including Natural Cycles, Strava, & more
- 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
- REBUILT FOR GREATER ACCURACY - Oura Ring 5 has been re-engineered and reconfigured, providing more precise personal health data. Larger, smarter sensors bring research-grade accuracy—all in Oura’s smallest form factor yet
Membership and price
Oura lists many app features as membership features, so include the local membership cost when comparing the ring with alternatives. Membership prices vary by geography. At the time of the research, Oura’s UK store listed Ring 5 finishes from £399 to £499; that is a UK snapshot, not a universal or guaranteed current price.
Check Oura’s store and membership information for your region before buying. The reviewed research does not verify a current US price or a single price that applies everywhere.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Health features and what they do not establish
Oura announced Health Radar features including Blood Pressure Signals, which it describes as monitoring shifts and patterns that may indicate cardiovascular strain, and Nighttime Breathing, a 30-day view of sleep-related breathing patterns. Oura said these features would roll out through July 2026 to members in the US, UAE, and India with Ring Gen3 or newer. Availability can change, so check Oura’s current information for your location.
Rank #4
- 【Check the Size Before Purchase】 Before buying the BIEMHA Smart Ring, we strongly suggest that you refer to the size chart and carefully measure the circumference of your finger. This will ensure you get the most comfortable wearing experience and easily avoid any unnecessary returns or exchanges.
- 【Real‑time Accurate Sleep & Fitness Monitoring】 BIEMHA smart ring tracks your sleep quality and daily activities in real time. With advanced sensors, it provides precise data about your sleep cycle, helping you optimize rest and recovery. Whether you are tracking steps, calories or exercise performance, this smart ring can provide you with the most accurate insights to support your fitness goals and enhance your overall health.It is a good choice for family and friends.
- 【Health Monitoring】The BIEMHA ring features advanced 4.0 sensors that automatically measure your heart rate every 30 min when worn. It provides continuous health tracking and comprehensive wellness management all day.
- 【2‑3 Day Battery Life】 With a 2‑3 day battery life, the BIEMHA smart ring ensures continuous health monitoring without frequent charging. When used with the smart charging case, the usage time can even exceed 5 days. Whether you are tracking sleep patterns or fitness activities, you can count on long‑lasting performance without constant interruptions.
- 【80‑meter Waterproof, Suitable for Various Scenarios】 The BIEMHA Smart Ring has excellent waterproof performance, with a waterproof depth of up to 80 meters. Whether it's for daily wear, an intense workout session or a pleasant swimming time, it can handle it with ease. What's more, even if you have sensitive skin, you can still enjoy an extremely comfortable wearing experience when wearing this ring.
Oura also announced GLP-1 Insights, PDF lab-result uploads, and health-data deletion features. Its announcement said GLP-1 Insights would begin rolling out in June 2026 to members in the US, UAE, and India with Ring Gen3 or newer. These are announced app capabilities; the research reviewed here does not establish clinical outcomes or diagnostic value. Do not treat a consumer wellness feature as a medical diagnosis.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How to judge Oura’s claims
Keep product specifications, company claims, and independent validation separate. Oura’s listed dimensions, sensors, battery estimate, and sizing are product information. Its statements about improved sensor contact and consistency are company claims. The research reviewed here does not establish independent Ring 5 performance testing.
Oura’s store listing references a sleep-staging study, but that reference does not establish that the study validates Ring 5. Do not apply results from another generation to Ring 5 without evidence that the study examined this device and applies to it.
Best Value
- SIZE BEFORE YOU BUY - It’s important to size yourself using our Oura Ring 5 Sizing Kit before purchasing an Oura Ring 5. Oura Ring 5 sizes are different from standard ring sizes and Oura Ring 4 sizes
- AVAILABLE SIZES - Oura Ring 5 is available in sizes 6-13. There are no half sizes
- CHOOSE A FINGER - Oura Ring 5 works on all fingers and can be worn on either hand. For optimal accuracy, we recommend wearing your Oura Ring 5 on your index, middle, or ring finger. Size the exact finger you plan to wear your Oura Ring on
- CHOOSE A FINGER - Oura Ring 5 works on all fingers and can be worn on either hand. For optimal accuracy, we recommend wearing your Oura Ring 5 on your index, middle, or ring finger. Size the exact finger you plan to wear your Oura Ring on
- COMFORT AND ACCURACY - A properly fitting Oura Ring 5 will result in the highest data accuracy, comfort, and overall experience
Who might choose Oura Ring 5?
Ring 5 may suit someone looking for a discreet, screenless ring and Oura’s app-based sleep, activity, readiness, stress, and health features. It may be less suitable for someone whose main priority is a live workout display or independently verified exercise performance. The research reviewed here does not provide head-to-head results with sports watches, so compare the capabilities you need rather than assuming one device wins on accuracy.
Frequently Asked Questions
What does Oura Ring 5 track?
Oura lists sleep, heart rate, temperature, blood oxygen, activity, stress, readiness-related features, and other health insights in its app. Many listed features require an active membership. Availability may vary by feature and region.
Is Oura Ring 5 good for workouts?
Oura announced Live Activity Tracking and changes to Automatic Activity Detection, but the research reviewed here does not establish Ring 5’s accuracy for specific workouts or show that it replaces a sports watch. Check current feature availability and consider which live workout information you need.
What changed from Oura Ring 4?
Oura describes Ring 5 as 40% smaller in volume and lists differences in dimensions, photodetectors, data storage, battery estimates, and available sizes. Those specification changes do not by themselves prove better real-world performance.
Do I need a new sizing kit for Oura Ring 5?
Oura recommends using the sizing kit for the correct generation. Ring 5 and Ring 4 have different size ranges, and Oura says sizing differs slightly between generations, so do not assume your old size transfers exactly.
Does Oura Ring 5 require a membership?
Oura lists many app features as membership features. Membership prices vary by geography, so check the current local cost and feature details before purchasing.
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.
