The leaks and rumors are officially behind us. Oura has formally launched the Oura Ring 5, claiming the title of the “world’s smallest smart ring.”
The fifth-generation wearable brings a massive, long-awaited physical downsizing alongside critical upgrades to its sensor design and health-tracking suite. If you are trying to decide whether to grab the older Oura Ring 4 or pre-order the brand-new Gen 5, the physical and functional differences are distinct.
The Verdict: If you have been waiting for a smart ring that finally looks and feels like a normal piece of jewelry, the 40% size reduction on the Oura Ring 5 is a massive milestone. However, keep in mind that the ring still requires the standard $5.99/month subscription to unlock your long-term data. If you prefer a broader size range (sizes 4–15) or are hunting for a deep discount, the Oura Ring 4 remains an excellent choice.
Oura Ring 5 vs. Oura Ring 4: The Core Changes
The upgrade cycle focuses heavily on dramatic miniaturization, an overhauled optical sensor array, and long-requested software capabilities.
| Feature | Oura Ring 4 | Oura Ring 5 (New Launch) |
| Starting Price | $349 | $399 |
| Physical Volume | Baseline | 40% smaller overall volume |
| Thickness | 2.88 mm | 2.28 mm (Ultra-thin profile) |
| Width | 7.9 mm | 6.0 mm (Significantly narrower) |
| Weight | 3.3 to 5.2 grams | 2.0 to 2.69 grams (Lightweight) |
| Available Sizes | Sizes 4–15 | Sizes 6–13 |
| Sensing Architecture | Recessed Smart Sensing | 12 Signal Pathways + Enhanced LED Contact |
| Battery Life | Up to 8 days | Up to 7 to 9 days (Improved efficiency) |
| Workout Metrics | Retroactive tagging | Live Activity Tracking (Real-time tracking & widgets) |
The Major Hardware Upgrades in Gen 5
1. A True Jewelry-Like Form Factor
The most obvious limitation of previous smart rings was their chunkiness, often looking explicitly like “tech jewelry.” Oura has shaved the physical volume down by 40%, dropping the thickness to a sleek 2.28 mm and the width to a narrow 6.0 mm. It is practically indistinguishable from a plain, classic metallic band, making it far more comfortable for overnight sleep and workouts.
2. High-Density Sensor Overhaul
To shrink the hardware without losing data accuracy, Oura redesigned the interior. The Oura Ring 5 features recessed sensor domes that maintain better, more consistent contact with the skin. Powered by more intense LEDs routing through 12 distinct signal pathways, it provides cleaner biometrics across diverse finger types, movement profiles, and skin tones.
3. Anodized Aluminum Charging Case
While it comes packaged with a standard plug-in desktop charging dock, Oura has introduced a standalone, portable Charging Case (available for $99). Built from scratch-resistant anodized aluminum, this travel-ready case acts as a protective shell and holds a massive one month of reserve battery power on a single charge.
Advanced 2026 Software Features
Alongside the hardware reveal, Oura is introducing deeper clinical and holistic wellness monitoring:
- Health Radar (Blood Pressure & Breathing): Developed alongside medical professionals, this feature introduces Blood Pressure Signals to monitor and track metrics during sleep. It also compiles a 30-day rolling Nighttime Breathing report to visually flag potential sleep apnea risks or breathing disturbances.
- GLP-1/Ozempic Metabolic Tracking: Catering to the massive shift in metabolic health, the Oura app introduces specialized tracking tools for users on GLP-1 weight-loss medications, mapping drug consistency against appetite trends, energy levels, and sleep recovery.
- Hormonal Birth Control & Menopause Insights: The app’s Cycle Insights feature has been expanded. It now adapts tracking metrics to account for users on hormonal contraceptives (pills, patches, IUDs) and introduces a perimenopause symptom-mapping dashboard to track lifestyle impacts over time.
- Lab Upload Integration: Starting at the end of June 2026, users can import third-party laboratory blood work biomarkers directly into the Oura App, contextualizing clinical blood data right alongside their daily sleep and recovery metrics.
Frequently Asked Questions about the newly launched Oura Ring 5
1. How much does the Oura Ring 5 cost, and do I still need a monthly subscription?
The Oura Ring 5 starts at $399 for the base brushed titanium finishes, while premium styles (like gold or rose gold) run higher.
Yes, the subscription is still required. To see anything beyond your basic daily scores, you must pay $5.99/month (or $69.99/year). If you buy a new ring, Oura typically bundles it with one free month of membership.
2. Can I use my old Oura Ring 4 charger for the Oura Ring 5?
No. Because the Oura Ring 5 is significantly narrower (6.0 mm wide compared to the Gen 4’s 7.9 mm) and 40% smaller in total volume, it will not sit securely on an older Oura Ring 4 charging dock. The Gen 5 comes packaged with its own downsized desktop charging dock, and you can optionally purchase the new aluminum travel charging case for $99.
3. What exactly does the new “Health Radar” feature track?
Health Radar is Oura’s new medical-grade software suite. It focuses heavily on two overnight metrics:
Blood Pressure Signals: It analyzes arterial pulse waves in your finger while you sleep to map baseline blood pressure trends (though it does not give you a single, exact cuff-like systolic/diastolic reading).
Nighttime Breathing Patterns: It monitors blood oxygen dips and breathing variations over a rolling 30-day window to flag early warning signs of sleep apnea.
4. If I already own an Oura Ring 4, should I upgrade to the Gen 5?
Upgrade if: You hate the bulkiness of the Gen 4, have shorter fingers where a 7.9mm band feels intrusive, or want live, real-time tracking metrics during workouts instead of looking at a summary afterward.
Skip the upgrade if your current Gen 4 battery is still holding a solid 5 to 7-day charge and you primarily use the ring as a passive overnight sleep tracker. The core sleep algorithm remains highly accurate on both devices.
