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OURA Ring 4 Smart Ring - Ceramic Cloud - Size 9

  • Based on 701 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, Sep 8
Order within 6 hours and 46 minutes
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Style: Ceramic


Color: Cloud


Size: 9


Features

  • ACCURACY - SMART SENSING - Oura tracks over 50 health metrics, including sleep, activity, stress, heart health, and womens health metrics. Oura Ring 4 is powered by Smart Sensing, which adapts to you delivering accurate, continuous data, day and night
  • LONG LASTING BATTERY - With up to 8 days of battery life, no screens and no vibrations, Oura Ring 4 allows you to focus on the present. From a workout to a night out youre free to forget its on. Until you start getting compliments
  • OURA MEMBERSHIP - First month of membership is included with purchase, for new members only. Subscription is 5.99/mo afterwards. Membership is tied to your account via the Oura App, not your physical ring
  • HSA/FSA ELIGIBLE - We can accept HSA or FSA funds for the following: Oura Ring, additional chargers, and shipping
  • DESIGNED FOR 24/7 WEAR - The updated design of the Oura Ring 4 is more comfortable, fits better than ever, and is water resistant. The first all-titanium smart ring combines exceptional durability with a gentle touch, even for sensitive skin
  • SYNC WITH YOUR FAVORITE APPS - Compatible with iOS and Android Oura seamlessly integrates with over 40 apps including Apple Health, Google Health Connect, Natural Cycles, Flo, Strava, & more
  • LOOKING FOR THE BEST HEALTH TRACKER? - Whether youre searching for a sleep ring or fitness ring, Oura Ring 4 is for you this revolutionary smart ring that allows you to discreetly track your sleep, activity, recovery and stress in style

Description

Oura Ring 4 Ceramic is a modern expression of our revolutionary smart ring technology, blending refined elegance with everyday durability. The high- performance ceramic exterior is designed to keep up with you. The Ceramic Collection is available in sizes 4-15 and three unique colors: Petal, Tide and Cloud. Each new color is built to accent your style and personality. This colorful new take comes with the same cutting-edge technology of Oura Ring 4. Track over 50 health metrics and get personalized insights into your sleep, activity, readiness, stress, heart health, metabolic health, women's health and more. It is built around a breakthrough sensing technology, Smart Sensing, which adapts to your finger to deliver accurate, continuous data. With 5-8 days of battery life, you'll see a complete picture of your health. It's designed with recessed sensors on the interior, making it comfortable and gentle, even on sensitive skin. Oura Ring is FSA/HSA Eligible — we can accept FSA or HSA funds for the following: Oura Ring, additional chargers, and shipping. Oura Ring 4 Ceramic Polishing Pad: Keep your Oura Ring 4 Ceramic looking like new with the Ceramic Polishing Pad, redeemable once you sync your purchase in the Oura App. Due to the hardness of the zirconia ceramic, it can take on the color of softer metals, like a dumbbell or cookware. Over time, you may notice grey marks on your Oura Ring 4 Ceramic. Rest assured, it's not damaged — it's evidence of a metal transfer and easy to remove with proper cleaning. Use caution when handling metal objects and consider removing your Oura Ring for some activities. The Oura Ring 4 Ceramic Polishing Pad is your partner in keeping your ring in top condition. IMPORTANT: Size yourself with the Oura Ring Sizing Kit before you buy — Oura Rings are not US standard sizing, and finding the right size will result in the best experience possible. With a sizing kit purchase, a credit will automatically be applied to your Oura Ring at checkout.

Operating System: Android, iOS


Memory Storage Capacity: 16 MB


Special Feature: Activity Tracker, Cycle Tracking, Daily Workout Memory, Lightweight


Battery Capacity: 18


Connectivity Technology: Bluetooth


Wireless Communication Standard: Bluetooth


Battery Cell Composition: Lithium Polymer


GPS: GPS Via Smartphone


Shape: Round


Screen Size: 0.02


Operating System: Android, iOS


Additional Features: Activity Tracker, Cycle Tracking, Daily Workout Memory, Lightweight


GPS Geotagging Functionality: GPS Via Smartphone


Band Material Type: Ceramic


Water Resistance Level: Water Resistant


Human Interface Input: Buttons


Supported Application: Fitness Tracker, Sleep Monitor, Voice Control, Time Display, Messages, Social Media, Heart Rate Monitor, Pedometer, Reminders, Weather, Calendar, Music Player


Water Resistance Depth: 100 meters


Supported Satellite Navigation System: GPS


Metrics Measured: Body Temperature, Heart Rate, Menstrual Cycle, Sleep Duration


Closure Type: Slip On


Shape: Round


Style Name: Ceramic


Color: Cloud


Connectivity Technology: Bluetooth


Wireless Compability: Bluetooth


Wireless Provider: Unlocked


Communication Feature: Bluetooth, GPS


Compatible Devices: Smartphone


Compatible Phone Models: Android Devices, iOS Devices


Memory Storage Capacity: 16 MB


RAM Memory Installed: 16 MB


Brand: OURA


Model Name: Ring 4 Ceramic Smart Ring


Target Audience: Unisex Adults


Age Range Description: Adult


Model Number: JZ90-57460-09


Built-In Media: Charging Cable, Information Booklet, Oura Ring 4 Ceramic, Oura Ring 4 Charger, Quick Start Guide


Warranty Description: 1 Year Manufacturer


Wearable Computer Type: Smart Ring


Manufacturer: Oura


Battery Capacity: 18


Battery Cell Type: Lithium Polymer


Battery Average Life: 5 days


Battery Charge Time: 80 minutes


Screen Size: 0.02


Display Type: No Display


Item Weight: 6.7 ounces


Item Dimensions: 0.31 x 0.31 x 0.14 inches


Item Dimensions D x W x H: 0.14"D x 0.31"W x 0.14"H


Warranty Type: Limited


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Sep 8

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Love this ring!
Style: Ceramic Color: Tide Size: 10
I absolutely love this ring! It is an investment but provides so much insight regarding your health. The app is very easy to use. No issues with it connecting, battery life is about a week when fully charged. Be sure to get the sizing kit to ensure you are getting the correct size and fit. It is a heavier ring, but I don’t even know it’s there! ... show more
Reviewed in the United States on August 1, 2026 by Amanda

  • Full of data while compact
Style: Ceramic Color: Midnight Size: 10
I’ve been extremely impressed with my Oura Ring. I love how much it tracks—from stress levels and cardiovascular metrics to personalized AI insights that actually help me understand my health trends over time. The information feels tailored to me rather than just presenting raw data, which makes it much more useful. I also chose the darker finish and was worried it would scratch easily, but it’s held up much better than I expected. It still looks great after regular daily wear. One unexpected benefit is how much I enjoy not having constant notifications on my wrist. I’m honestly considering replacing my Apple Watch with the Oura Ring full-time because it gives me the health data I care about without all the distractions. If you’re looking for a sleek, comfortable health tracker, I’d definitely recommend it. ... show more
Reviewed in the United States on July 26, 2026 by Jordan Sims

  • Oura Ring
Love this ring! I bought it to find out about my sleep pattern. However, it does so much more--activity level, respiration, stress levels, recovery timing from stress and more. I chose the ceramic ring in the color petal over the metal rings. I like the fact that it looks different from the metal versions. There are several ceramic ring colors to choose from. I am fair skinned-so the petal pink blends in nicely without competing with other jewelry. After purchasing the ring, I found out you should wear the ring on your non-dominant hand. I sized the ring for my index finger on my dominant hand which is larger than my non-dominant index finger. I should have bought a size 11. ... show more
Reviewed in the United States on August 4, 2026 by Pamela in Birmingham

  • Would buy again
Style: Ceramic Color: Tide Size: 11
Have had the ring for about a month and I will never go back to a fitness watch. Beyond happy. I will say the ceramic scratches easily but that is said in the description especially if worn on your dominate hand. I will be buying covers but it fits perfectly and does exactly what is expected. The battery life lasts way longer than a watch and does just as much if not more. Was easy to set up and connect on the first day. Highly accurate readings and love that it was HSA/FSA eligible ... show more
Reviewed in the United States on July 16, 2026 by dwitt

  • Pretty and Practical
Style: Ceramic Color: Petal Size: 9
Loved being able to test the size first. The ceramic finish is beautiful and feels great on. So helpful to try before committing. Comfortable and stylish — exactly what I was hoping for. This ring has been such an eye‑opener. Sleep tracking, readiness scores, activity insights — all super accurate and helpful. It’s comfortable enough to wear 24/7, and I love the sleek, minimal look. It keeps me accountable on busy days and helps me understand why I feel tired even when I think I slept. I love how simple this makes tracking my health. ... show more
Reviewed in the United States on February 14, 2026 by Marisa

  • Beautiful ring
Style: Ceramic Color: Cloud Size: 8
I love my ring! Best purchase I’ve made! It’s strong, so far zero scratches shown, compared to my last one I had which was all silver.
Reviewed in the United States on August 15, 2026 by JENNIFER LATHROP

  • A Wellness Game Changer That Helps Me Understand My Body
The Oura Ring 4 has truly been a game changer for me! As someone living with chronic illnesses, being able to better understand my body, track my patterns, and recognize changes has been incredibly valuable. This ring gives me insight into things like sleep, recovery, readiness, activity, and so much more, helping me become more in tune with what my body needs. I was a little hesitant about the price and the monthly subscription at first, but after using it, I can confidently say it’s worth the investment. The amount of information and features it provides makes it feel like a personal wellness tool right on my finger. I love that it helps me notice trends, make better decisions for my health, and understand when I may need to slow down or prioritize rest. If you’re someone who wants to be more connected with your body and your overall wellness, the Oura Ring 4 is definitely worth considering. This has become an essential part of my daily routine, and I couldn’t recommend it more! ... show more
Reviewed in the United States on July 15, 2026 by Brianna w

  • 10/10
Style: Ceramic Color: Petal Size: 10
Been wearing my ceramic ring since January. Absolutely no issues and no scratches. Definitely worth the money!
Reviewed in the United States on August 14, 2026 by Madison

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