Oura Ring 4 Ceramic Midnight

AU $152.00

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SKU: JZ90-1001-1 Category:
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Naturally colorful. Powerfully personal.

  • 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.

  • 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.

  • 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

What’s Included

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

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: 7.9 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
Size

4, 5, 6, 7, 8, 9, 10, 11, 23, 13, 14, 15

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