Experience personalized health insights with the Oura Ring 4 in Ceramic Cloud, Size 8, the revolutionary smart ring engineered for health-conscious individuals, wellness enthusiasts, and tech-savvy users who demand discreet tracking, comprehensive health metrics, and elegant design without compromise. At its core lies Oura’s advanced multi-sensor health platform, featuring precision optical sensors, temperature monitoring, and motion detection that deliver clinically relevant insights into sleep quality, heart rate variability, activity levels, and recovery status—transforming raw biometric data into actionable guidance for a healthier, more balanced lifestyle.
The elegant Ceramic Cloud finish represents a major advancement in wearable aesthetics, featuring a soft, luminous white ceramic coating with subtle pearlescent depth that complements any style while resisting scratches, fingerprints, and daily wear. Unlike bulky smartwatches that draw attention or limit outfit choices, this minimalist ring design delivers powerful health tracking in a jewelry-grade form factor that transitions seamlessly from workouts to professional settings to special occasions—proving that health technology shouldn’t compromise on beauty or versatility. The distinctive Ceramic Cloud tone adds a touch of ethereal sophistication that evokes calm skies and mindful clarity, making it perfect for users who value both wellness and aesthetic expression with a light, airy aesthetic.
Powering this intelligent health experience is Oura’s industry-leading 8-day battery life, enabling a full week of continuous tracking on a single charge. Unlike smartwatches that require daily charging and interrupt your health monitoring, this extended battery ensures uninterrupted insights into your sleep patterns, activity trends, and recovery metrics—providing peace of mind for users who demand reliable performance without frequent charging interruptions. The wireless charging capability enables convenient power restoration with a simple placement on the included charging dock.
The comprehensive sleep tracking technology represents a breakthrough in wearable sleep science, analyzing sleep stages, sleep efficiency, resting heart rate, heart rate variability, breathing patterns, and body temperature variations throughout the night. Unlike basic sleep trackers that only estimate sleep duration, this advanced system provides detailed insights that help you understand your sleep quality, identify patterns affecting rest, and make informed adjustments to improve recovery and daytime performance.
For holistic health monitoring, the 24/7 heart rate and HRV tracking delivers continuous cardiovascular insights that inform your readiness, stress levels, and recovery status. Whether you’re optimizing athletic performance, managing stress, or simply staying informed about your wellness, this intelligent system provides personalized recommendations that help you make smarter health decisions—transforming passive data collection into meaningful lifestyle guidance.
The non-standard fit design requires measurement with the Oura Ring 4 Size Kit (sold separately or included with purchase) to ensure perfect comfort and accurate sensor contact. Unlike one-size-fits-all wearables that compromise fit or accuracy, this personalized sizing approach ensures your ring sits securely on your finger for optimal sensor performance and all-day comfort—critical for reliable health tracking during sleep, workouts, and daily activities.
For seamless connectivity, the iOS and Android compatibility ensures you can enjoy full smart ring functionality regardless of your smartphone ecosystem. The Oura App (iOS & Android compatible) unlocks advanced data visualization, trend analysis, personalized insights, and membership features that transform raw metrics into meaningful health guidance—providing a cohesive, intuitive user experience that adapts to your wellness journey.
The lightweight, ergonomic design achieves the perfect balance between sophisticated aesthetics and all-day comfort. Measuring slim dimensions with a smooth, rounded interior, this smart ring sits comfortably on your finger without bulk or distraction. The hypoallergenic materials include medical-grade titanium with Ceramic Cloud coating that resists skin irritation, making it suitable for 24/7 wear including sleep tracking, workouts, and professional settings without compromise.
For active lifestyles, the automatic activity detection recognizes walking, running, cycling, and other movements to track steps, calories, and active time without manual input. The workout mode enables dedicated tracking for specific exercises with real-time heart rate monitoring and post-workout recovery insights—perfect for fitness enthusiasts who want detailed performance metrics without wearing a bulky smartwatch.
The readiness score feature synthesizes sleep quality, heart rate variability, body temperature, and activity data into a single, easy-to-understand metric that informs your daily decisions. Whether you’re planning an intense workout, scheduling important meetings, or simply deciding how to spend your day, this intelligent score helps you align your activities with your body’s natural rhythms—optimizing performance and preventing burnout.
Certified for daily residential and wellness use with comprehensive quality standards, this smart ring meets international safety and performance benchmarks. The user-friendly setup requires minimal technical expertise—simply size your finger with the Oura Size Kit, pair with the Oura App via Bluetooth, and start tracking your health journey immediately without complex configuration.
For safety and reliability, the low-voltage charging system ensures safe operation, while the water resistance rating (up to 100 meters) protects against swimming, showering, and daily exposure—making this smart ring suitable for active lifestyles without worrying about water damage. The energy-efficient sensors maximize battery life for extended usage sessions, reducing the frequency of recharging and enhancing overall convenience.
Whether you’re optimizing sleep quality, managing stress, tracking fitness progress, monitoring recovery, or simply staying informed about your wellness, the Oura Ring 4 in Ceramic Cloud delivers professional-grade health insights with consumer-friendly simplicity. Its discreet ring design (vs. bulky smartwatches) provides comfortable 24/7 tracking without drawing attention, while the comprehensive health metrics prove that minimalist wearables shouldn’t compromise on functionality—making every moment more informed, balanced, and perfectly tracked with the serene elegance of Ceramic Cloud.
Key Features:
1. Multi-Sensor Health Platform
Precision optical sensors + temperature monitoring + motion detection deliver clinically relevant insights into sleep, heart rate, and recovery.
2. Elegant Ceramic Cloud Finish
Soft, luminous white ceramic coating with pearlescent depth resists scratches and fingerprints while complementing any style.
3. 8-Day Battery Life + Wireless Charging
Full week of continuous tracking on single charge; convenient wireless charging dock for effortless power restoration.
4. Comprehensive Sleep Tracking
Advanced analysis of sleep stages, efficiency, HRV, breathing, and temperature for actionable sleep quality insights.
5. 24/7 Heart Rate + Readiness Score
Continuous cardiovascular monitoring synthesizes data into easy-to-understand readiness metric for informed daily decisions.
6. Non-Standard Fit + Size Kit Required
Personalized sizing ensures perfect comfort and accurate sensor contact for reliable 24/7 health tracking.
Technical Specifications:
- Sensors: Optical heart rate, PPG, NTC temperature, 3D accelerometer, gyroscope
- Health Metrics: Sleep stages, sleep efficiency, HRV, resting heart rate, body temperature, respiratory rate, activity tracking
- Battery Life: Up to 8 days typical use (varies by features enabled)
- Charging: Wireless charging dock included, ~20-80 minutes full charge
- Water Resistance: 100 meters (suitable for swimming, showering)
- Connectivity: Bluetooth Low Energy for app synchronization
- Compatibility: iOS 15+, Android 9+ via Oura App
- Materials: Medical-grade titanium with Ceramic Cloud coating, hypoallergenic interior
- Weight: Approximately 4-6g (varies by size)
- Dimensions: Size 8 (inner diameter ~18.2mm; measure with Oura Size Kit for accuracy)
- Special Features: Readiness Score, Sleep Score, Activity Score, automatic activity detection, workout mode, menstrual cycle insights
- Membership: Oura Membership required for full insights and personalized guidance (subscription sold separately)
- Included: Oura Ring 4 (Ceramic Cloud, Size 8), wireless charging dock, USB-C cable, quick start guide
- Color: Ceramic Cloud (soft luminous white with pearlescent finish)
- Sizing Note: Non-standard fit—measure with Oura Ring 4 Size Kit before ordering for perfect fit
Who Is This For?
- Sleep Optimization Seekers: Comprehensive sleep tracking enables actionable insights for improved rest and recovery.
- Wellness Enthusiasts: 24/7 heart rate + readiness score support informed decisions about activity, stress, and recovery.
- Minimalist Wearable Fans: Discreet ring design delivers powerful tracking without bulky smartwatch aesthetics.
- Style-Conscious Users: Ceramic Cloud finish offers ethereal, luminous elegance vs. conventional neutral tones.
Why It Stands Out:
- Discreet Health Tracking: Ring form factor provides comfortable 24/7 monitoring vs. bulky smartwatches that limit outfit choices.
- Ceramic Cloud Aesthetics: Luminous white ceramic finish offers jewelry-grade beauty with soft, ethereal pearlescent depth.
- 8-Day Battery Leadership: Week-long battery life vs. daily-charging smartwatches ensures uninterrupted health monitoring.
- Clinical-Grade Insights: Advanced sensors + Oura’s proprietary algorithms deliver medically relevant data vs. basic fitness trackers.
Bullet Points:
- Multi-Sensor Health Platform: Precision optical sensors + temperature monitoring deliver clinically relevant sleep, heart rate, and recovery insights.
- Elegant Ceramic Cloud Finish: Soft, luminous white ceramic coating with pearlescent depth resists scratches and fingerprints.
- 8-Day Battery Life + Wireless Charging: Full week of continuous tracking; convenient wireless charging dock for effortless power restoration.
- Comprehensive Sleep Tracking: Advanced analysis of sleep stages, efficiency, HRV, breathing, and temperature for actionable insights.
- 24/7 Heart Rate + Readiness Score: Continuous cardiovascular monitoring synthesizes data into easy-to-understand readiness metric.
- Non-Standard Fit + Size Kit Required: Personalized sizing ensures perfect comfort and accurate sensor contact for reliable tracking.
- iOS/Android Compatible + Water Resistant: Full app functionality on both platforms; 100m water resistance for swimming and daily wear.
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