The Oura Ring 4 arrives as one of the most advanced health-tracking smart rings available in 2025, blending cutting-edge biometric sensing with a refined, all-titanium design. It promises deeper sleep insights, adaptive health monitoring, improved accuracy, and a significantly better wearing experience.
With no screen, no vibrations, and an ultra-light 5.2-gram build, the Oura Ring 4 is crafted for people who want continuous health tracking without wearing a bulky smartwatch. It discreetly monitors over 50+ metrics, ranging from sleep and recovery to stress, body temperature, women’s cycle metrics, and daily readiness scores.
As Oura’s most advanced model yet, the Ring 4 focuses on smart sensing, improving long-term accuracy while keeping comfort at the forefront. From athletes to wellness-focused professionals, the ring aims to deliver meaningful insights day and night — in a stylish, minimalist form.
The biggest upgrade in the Oura Ring 4 is its Smart Sensing technology, which continuously adapts to your habits, body patterns, and daily rhythms. This allows the ring to generate more accurate data across sleep, stress, heart rate, temperature, and activity. With tracking for over 50 metrics, it’s designed to serve as your 24/7 wellness companion.
Battery life is a major win for the Oura Ring 4. It lasts up to 8 days on a single charge, a strong improvement in a category where most wearables barely reach 2–3 days. The ring takes about 80 minutes to fully recharge, ensuring minimal downtime and hassle-free use throughout the week.
Oura redesigned its fourth-generation ring with a smoother, more ergonomic fit. It is water-resistant up to 100 meters, making it safe for swimming, showering, or sweaty workouts. Crafted in titanium, the ring feels extremely lightweight yet durable, and it remains comfortable even for people with sensitive skin.
While the first month is free, Oura requires a $5.99/month subscription for full access to its insights, trends, and long-term data. Those who prefer annual billing can choose the $69.99/year prepaid option. The membership is linked to your account, not the ring, allowing you to upgrade hardware without losing progress.
Oura Ring 4 uses its own sizing system, which differs from standard ring sizes. Buyers must use the Oura Sizing Kit to ensure accurate fitting before finalizing the ring size. This extra step helps avoid discomfort or inaccurate readings.
The ring syncs effortlessly with iOS and Android, and integrates with over 40 popular third-party apps, including Apple Health, Google Health Connect, Strava, Flo, and Natural Cycles. Supported metrics include:
Combined, these features make the Oura Ring 4 a well-rounded tracker for health-focused users.
The Oura Ring 4 is currently priced at $249.00 in the United States, with a limited-time offer available on Amazon US. The subscription cost is separate but necessary for complete access to insights and personalized guidance.
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The Oura Ring 4 continues Oura’s mission to simplify health tracking in the most subtle way possible. The biggest achievement is how effortless it feels — once you start wearing it, you barely notice it’s there. The lightweight titanium build and refined inner curve significantly improve long-term comfort, even during sleep.
Smart Sensing brings noticeable benefits. Sleep tracking is more consistent than previous generations, recovery trends feel more personalized, and temperature variations are captured with impressive precision. For women, cycle tracking is now more accurate and less intrusive than app-only solutions.
Battery life is another strong reason to consider upgrading. Going a full week without charging is liberating, especially compared to smartwatches that demand nightly top-ups. The app interface remains clean, intuitive, and insight-focused rather than overwhelming the user with raw data.
However, it’s not perfect. The etched design, although subtle, may not appeal to everyone. Titanium is durable, but the ring can pick up scratches over time. And the biggest downside continues to be the mandatory membership — a recurring cost that some users may find hard to justify despite its value.
Still, as a holistic health-tracking solution, the Oura Ring 4 is hard to beat. It balances minimalism, accuracy, and convenience in a way few wearables can match.
If you want a health tracker that blends into your lifestyle without a screen or constant distractions, the Oura Ring 4 is an excellent choice. It’s ideal for users focused on sleep quality, stress management, cycle tracking, and all-day health monitoring.
However, you should be prepared for the subscription cost and the potential for cosmetic wear on the ring. For those who prefer smartwatch-style interactions or require standalone GPS, this may not be the perfect fit.
The Oura Ring 4 is one of the most refined and capable smart rings available today. With improved sensing accuracy, better comfort, longer battery life, and deep health insights, it stands as a powerful tool for wellness tracking. While the subscription and minor design drawbacks exist, the overall experience makes the Oura Ring 4 a compelling upgrade for both new and existing Oura users.
Q1. Is the Oura Ring 4 comfortable to wear all day?
Yes, the Oura Ring 4 is designed with a smoother titanium body and lightweight build, making it comfortable for 24/7 wear, even during sleep and workouts.
Q2. Do I need a subscription to use the Oura Ring 4?
The ring works without a subscription, but full insights and advanced health features require an Oura Membership, which costs $5.99 per month.
Q3. How accurate is the Oura Ring 4 for health tracking?
Its Smart Sensing technology offers more reliable and adaptive tracking across sleep, heart health, stress, and temperature, making it one of the most accurate smart rings available.
Q4. What is the battery life of the Oura Ring 4?
The Oura Ring 4 provides up to 8 days of battery life on a single charge and takes around 80 minutes to fully recharge.
Q5. Is the Oura Ring 4 water-resistant?
Yes, it offers IP68 water resistance up to 100 meters, making it safe for swimming, showers, and everyday use without worry.
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