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.
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 | From 2.0 grams (Ultra-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 6 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 intense workouts.
2. High-Density Sensor Overhaul
To shrink the hardware without losing data accuracy, Oura completely 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.
- Live Activity Tracking: Wearers can now start a workout directly in the Oura app to see metrics tracked in real time from their phone, with lock screen widgets helping monitor pace, distance, and intensity.
- Counsel Health Integration: Built straight into the Oura app for U.S. members (launching across 43 states), this feature is an AI-enabled personalized dashboard that allows users to import electronic records (Oura Health Records) and virtually consult with licensed medical professionals for a nominal fee.
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 run (sizes 4–15) or are hunting for a deep clearance discount, the Oura Ring 4 remains an excellent choice.
Frequently asked questions about the newly launched Oura Ring 5
1. How much does the Oura Ring 5 cost, and when does it ship?
Oura Ring 5 officially launched on May 28, 2026, and is available for pre-order starting at $399 for the classic Silver and Black finishes. Premium colorways (like Gold, Brushed Silver, Stealth, and the new Deep Rose) cost $499.
Official retail shipping begins globally on June 4, 2026. Keep in mind that the ongoing $5.99/month Oura membership is still required to access your full health data graphs.
2. Can I use my old Oura Ring 4 charger for the Oura Ring 5?
No, they are not interchangeable. Because the Oura Ring 5 has been physically downsized by 40%—making it much thinner and narrower (6mm wide compared to the Gen 4’s 7.9mm)—it will not fit properly or charge on an older dock. The new ring comes bundled with its own smaller, size-specific desktop charging stand. You can also purchase a standalone aluminum travel charging case for $99.
3. What exactly does the new “Health Radar” feature do?
Health Radar is a new background-monitoring system that acts as an early-warning dashboard for your body. At launch, it tracks two primary areas:
Blood Pressure Signals: It continuously measures pulse wave variations in your finger overnight to identify trends linked to cardiovascular strain (though it doesn’t replace a traditional physical arm cuff).
Nighttime Breathing: It compiles a rolling 30-day view of breathing irregularities during sleep to help you track respiratory consistency or flag potential signs of sleep apnea.
