Designed to understand you
Built for accuracy and all-day comfort, so you can stay close to your health.
FSA or HSA eligible
Thoughtfully crafted,deeply insightful
Expertly crafted for quality and precision, Oura Ring 4 provides valuable insights into your holistic health — sleep, activity, stress, heart health, cycle and more.
Smart Sensing for the full picture
Incredible comfort for 24/7 wear
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
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 actionable insights that become increasingly tailored over time.
Become a member for $5.99 USD/month or $69.99 USD/year.
New members get their first month free.**
Meet the world’s smallest smart ring
40% smaller than Oura Ring 4. Now with greater accuracy and battery power than ever before.
- 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
- 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
- * Battery life and longevity depend on Oura Ring size, Oura App settings, feature configuration, activity, battery age, usage, and many other factors; actual results will vary. Battery life and charge cycles vary by use and settings. Battery tests were conducted across various sizes and scenarios. See Oura Ring 4 Battery Life and Ring Battery Tips for more information.
- ** $5.99 USD/month or $69.99 USD/annually before tax for US members, €5.99/month or €69.99/annually after tax for EU members, A$9.99 AUD/month or A$109.99 AUD/annually after tax for Australian members, CA$7.99 CAD/month or CA$89.99 CAD/annually before tax for Canadian members, ¥999/month or ¥11,800/annually after tax for Japanese members, £5.99/month or £69.99/annually after tax for UK members, CHF5.99/month or CHF69.99/annually after tax for Swiss members, $6.99 USD/month or $79.00 USD/annually after tax for rest of world.