Our most personal smart ring ever
A new era of unparalleled accuracy and comfort helps you get up close and personal with your health like never before.
Sleeker, smarter,
and made for you
Expertly crafted for quality and precision, Oura Ring 4 provides valuable insights into your holistic health – sleep, activity, stress, heart health, cycle and more.
See Tech Specs ↓Smart Sensing powers our most accurate smart ring ever
Increases accuracy
Provides continuous data for a holistic picture of your health.
Adapts to you
Calibrates to your baseline so your scores get smarter over time.
Optimizes battery
Efficient sensing extends battery life up to 8 days.
Uninterrupted health tracking
Based on your Oura Ring size and your lifestyle, the Oura Ring 4 battery can last between 5–8 days — so you don't even have to think about charging*.
Live healthier, longer
Oura Membership and Oura Ring work hand-in-hand, empowering you to prioritize your long-term health goals and build healthy habits that will last a lifetime. Personalized insights from Oura help you understand what your body needs, for today and for your future.
A finish for every lifestyle
Choose your Oura Ring
Oura Membership grows with you
Oura Membership translates your body's data into actionable insights personalized to your unique needs. With innovative, AI-powered tools like Oura Advisor, get exclusive access to insights that become increasingly tailored over time.
Become a member for $5.99 USD/month or $69.99 USD/year — and new members get your first month on us**.
Sleep Staging
Sleep Score
Bedtime Guidance
Automatic Activity Detection
Activity Score
Personalized Activity Goals
Readiness Score
Contributors
Blood Oxygen
Daytime Stress
Resilience
Restorative Time
Heart Rate
Heart Rate Variability
Cardiovascular Age
Cycle Insights
Period Prediction
Natural Cycles
What's Included
- Oura Ring 4
- Size-specific charger
- USB-C cable
Tech Specifications
Sensors
- Red and infrared LEDs measure blood oxygen levels
- Green and infrared LEDs alternate to measure heart rate and heart rate variability 24/7 and respiration rate
- Digital sensor measures temperature trends
- Accelerometer tracks movement and activity 24/7
Compatibility
- Oura App is available in English, Finnish, Japanese, German, French, Spanish, Italian, Norwegian, Swedish, Czech, Dutch, and Danish
- Supports metric and imperial units of measurement
- Integrates with 40+ apps
- Available on iOS and Android
Weight and Dimensions
- Width: 7.90mm
- Thickness: 2.88mm (similar to a wedding band)
- Weight: 3.3 to 5.2 grams (depending on Oura Ring size)
Battery Life
- 5-8 days of battery life*
- Typically charges in 20-80 minutes, depending on battery level
Quality Materials
- Non-allergenic titanium on inner & outer surfaces
- Seamless titanium interior
- Water resistant up to 100m/328 ft
- Minor scratches from regular wear are normal
Connectivity
- Bluetooth Low Energy
- Automatic firmware updates via Oura App
- EMF-safe
- Supports airplane mode
- FCC-certified