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 โ sleep, activity, stress, womenโs health, and more.
Ceramic like youโve 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 womenโs health. With innovative, AI-powered tools like Oura Advisor, get exclusive access to actionable insights that become increasingly tailored over time.
Wearables differ in where they're worn, the sensors they use, and how they process data. For the most consistent and meaningful insights, it's best to track trends and changes over time within your Oura Ring and Oura App, rather than comparing your Oura results to those from other devices.
The exterior of Oura Ring 4 Ceramic is made of ceramic zirconia, whereas Oura Ring 4 exterior is made of titanium. With Oura Ring 4 Ceramic, there is a slight increase in thickness due to the material properties, and to ensure the product is durable and strong.
Oura Ring 4 Ceramic is made from high-performance zirconia ceramic, a premium material selected for its scratch resistance, luster, and color. Due to it's hardness, it can scuff and take on the color of softer metals, like a dumbbell or kettle handle. Itโs important to properly clean and care for your Oura Ring 4 Ceramic, so you can keep it looking like new.
Now, you can change Oura Ring 4 styles as easily as changing your outfit. If you have two or more Oura Ring 4 styles, you can now switch easily between different finishes.
Oura Ring is water-resistant up to 100 meters (~330 feet), meaning that you can wear it while showering, swimming, or partaking in recreational diving (e.g. snorkeling), but we donโt recommend using your Oura Ring while scuba diving or keeping it submerged underwater for over 12 hours. Chlorine will not damage it.
Oura Ring operating temperature ranges from -10โ52ยฐC / 14โ125ยฐF. You can safely wear your Oura Ring in the shower, hot tubs, saunas, ice baths, and cryotherapy tanks. However, extended exposure to extreme temperatures (below -20ยฐC / -4ยฐF or above 60ยฐC / 140ยฐF) may lead to battery damage.
Oura Membership unlocks the full potential of the Oura App, allowing you to access detailed insights and personalized guidance. Without a membership, the Oura Ring can be used only with limited functionality.
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
Weight and Dimensions
Width: 7.9 mm
Thickness๏ผ3.51 mm
Weight๏ผ5.1 - 8.1 g (depending on ring size)
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
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
Battery Life
5-8 days of battery life**
Typically charges in 20-80 minutes, depending on battery level
Connectivity
Bluetooth Low Energy
Automatic firmware updates via Oura App
EMF-safe
Supports airplane mode
FCC-certified
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Terms & Conditions
Except in cases of hardware malfunction, products are non-refundable and non-exchangeable once unsealed or activated. Please verify the product specifications before making your purchase. By checking 'Agree', you acknowledge and accept the aforementioned terms.
Oura Ring size
You acknowledge that you have selected your correct Oura Ring size. Once the product packaging is opened, unsealed, or tampered with, the size is considered final and cannot be exchanged, returned, or refunded for a different size.
