Oura Ring 4

Our most personal smart ring ever

Colors

Silver — $299.00

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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.

Sleeker, smarter, and made for you

  • Our new Smart Sensing technology provides enhanced accuracy, deeper personalization, and longer b...

    Our new Smart Sensing technology provides enhanced accuracy, deeper personalization, and longer battery life.

  • Sleek, fully-titanium design and discreet sensors provide 24/7 comfort.

    Sleek, fully-titanium design and discreet sensors provide 24/7 comfort.

  • With 5-8 days** of battery life per charge, never miss a beat when it comes to tracking your health.

    With 5-8 days** of battery life per charge, never miss a beat when it comes to tracking your health.

Oura Membership grows with you

An Oura subscription translates your health data into personalized information. Thanks to innovative AI tools like Oura Advisor, you receive practical advice increasingly tailored to your needs.

Heart health

Sleep and rest

Activity and movement

Stress

Women's health

Metabolic health

Oura Membership grows with you

Frequently asked questions

Product image

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