Oura Ring 4 Ceramic

Express yourself in colorful ceramic.

Colors

Midnight — $399.00

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Free sizing kit ✓
Select a size

Select a size

The product sizing is unique with respect to the American standard.

Not sure what size you are? You can go back and select the free sizing kit option.

Get a free sizing kit with your order and size at home.

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*Choosing the right Oura Ring size is essential for comfort and accurate readings. Oura Ring sizing is unique in comparison to the US Standard.

Get a free sizing kit with your order and size at home.

Add your video in the section settings

Select the 'Free Sizing Kit' option when you order your Oura Ring. You're purchasing the Oura Ring, but we'll send you the sizing kit first at no extra cost.

Most orders are processed and delivered within 3 days. This kit includes sample ring sizers to help find your ideal fit.

Test the sample rings on your preferred finger. We recommend the index finger for optimal performance and accuracy. If you wear another finger, the middle and ring fingers are good alternatives.

Confirm your size by visiting the link on the sizing kit's packaging, and we will ship your Oura Ring to you. Feel free to share your sizing kit with friends and family.

*Choosing the right Oura Ring size is essential for comfort and accurate readings. Oura Ring sizing is unique in comparison to the US Standard.

Pay twelve months in advance and don't worry about a thing.

Subscription

The subscription will begin when the trial period or current subscription ends.

Pay twelve months in advance and don't worry about a thing.

  • The most popular option
  • Ideal as a gift for friends and family
  • Forget about monthly fees

The subscription will begin when the trial period or current subscription ends.

Naturally colorful. Powerfully personal.

  • Oura Ring 4 Ceramic is built for 24/7 comfort with 5-8 days of battery life.** Smart Sensing tech...
    Advanced in every way

    Oura Ring 4 Ceramic is built for 24/7 comfort with 5-8 days of battery life.** Smart Sensing technology adapts to your finger to deliver highly accurate, continuous data. All Oura Ring 4 styles provide valuable insights into your holistic health – sleep, activity, stress, women’s health, and more.

  • Thoughtfully crafted in high-performance zirconia ceramic, Oura Ring 4 Ceramic combines refined e...
    Ceramic like you’ve never seen

    Thoughtfully crafted in high-performance zirconia ceramic, Oura Ring 4 Ceramic combines refined elegance with material innovation. Each ceramic ring goes through a traditional firing process that strengthens the material and gives it a smooth, polished finish.

  • Show your true colors and choose from four stunning new finishes to express your individuality. I...
    Made for you and all you do

    Show your true colors and choose from four stunning new finishes to express your individuality. If you own two or more Oura Ring 4 styles, you can now easily switch between different finishes to suit your mood, style, and energy.

Experience the science of self-care

Track over 50 health and wellness metrics, and get personalized insights into your sleep, activity, stress, metabolic, heart health, and women’s health. With innovative, AI-powered tools like Oura Advisor, get exclusive access to actionable insights that become increasingly tailored over time.

Heart Health

Sleep & Rest

Activity & Movement

Stress

Women’s Health

Metabolic

Experience the science of self-care

Frequently Asked Questions

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What's Included

  • Oura Ring 4 Ceramic
  • Size-specific charger
  • USB-C cable
  • Ceramic Polishing Pad

Tech Specifications

Sensores

  • 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: 7.9 mm
  • Thickness: 3.51 mm (similar to a wedding band)
  • Weight: 5.1 - 8.1 g (depending on ring size)

Battery Life

  • 5-8 days of battery life**
  • Typically charges in 20-80 minutes, depending on battery level

Quality Materials

  • High-performance zirconia ceramic exterior
  • Seamless titanium interior
  • Water resistant up to 100m/328 ft
  • Minor scratches from regular wear are normal
  • Erasable scuffs may occur while handling metal objects

Connectivity

  • Bluetooth Low Energy
  • Automatic firmware updates via Oura App
  • EMF-safe
  • Supports airplane mode
  • FCC-certified