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Oura Ring 4 Ceramic Cloud - Size 8 - Size Before You Buy

  • Based on 130 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Thursday, Mar 5
Order within 14 hours and 13 minutes
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Style: Ceramic


Color: Cloud


Size: 8


Features

  • OURA MEMBERSHIP - First month of membership is included with purchase, for new members only. Subscription is 5.99/mo afterwards. Or opt for the annual prepaid option for 69.99. Membership is tied to your account via the Oura App, not your physical ring
  • 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
  • HSA/FSA ELIGIBLE - We can accept HSA or FSA funds for the following: Oura Ring, additional chargers, and shipping

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


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


Connectivity Technology: Bluetooth


Wireless Communication Standard: Bluetooth


Battery Cell Composition: Lithium Polymer


GPS: GPS Via Smartphone


Shape: Round


Brand: OURA


Style: Ceramic


Color: Cloud


Product Dimensions: 0.31 x 0.14 x 0.31 inches


Item Weight: 6.4 ounces


Item model number: JZ90-57460-08


Batteries: 1 Lithium Polymer batteries required. (included)


Date First Available: October 1, 2025


Manufacturer: Oura


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Mar 5

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Wasn’t Sure at First—Now I’m So Glad I Have It
Style: Ceramic Color: Cloud Size: 8
I wasn’t sure I wanted the Oura Ring 4 Ceramic, but just 48 hours in, I’m so glad my husband got this for me for Christmas. It’s already become something I check daily. Comfort & Design: The ring is incredibly comfortable and lightweight. I honestly forget I’m wearing it, even while sleeping. The ceramic finish looks sleek and modern and feels very high-end. Insightful Tracking: The data is fascinating and easy to understand. Sleep, readiness, and activity insights feel meaningful and helpful—not overwhelming. It’s already made me more aware of my sleep quality and recovery. Easy to Wear, Easy to Use: I love that it doesn’t feel bulky like a watch and works seamlessly in the background. The app is intuitive and well designed. Quick Buy-In: I expected this to be something I’d have to “get used to,” but instead I was hooked almost immediately. Within two days, I understood the value. Overall Impression: If you’re on the fence like I was, this might surprise you. Comfortable, insightful, and beautifully designed—it’s a gift I didn’t know I needed but now wouldn’t want to be without. ... show more
Reviewed in the United States on December 30, 2025 by DLynn

  • Stylish and functional design
Style: Ceramic Color: Cloud Size: 8
I’ve been trying the Oura Ring 4 for a short time and I really like how sleek it looks and how comfortable it feels on my hand. The setup was easy and the health tracking features seem accurate so far. I’m still testing all the functions, but overall it feels like a thoughtful and well-made device
Reviewed in the United States on October 31, 2025 by Viktoriia Bondarenko

  • Great quality huge battery
Style: Ceramic Color: Cloud Size: 8
Excellent quality! I have been using for a whole week and I only had to charge once. It is still getting some of my data ready. But it is so insightful. It measures so many things! I love reading the insights it gives me. It sends me some notifications on my phone. I am yet discovering all the thing it can track. But what I can say for now is that I am very impressed with the amount of things it can do. I actually love this more than I did my smart watch! It is indeed water resistant. I have been to the pool and take showers with it all the time! And the battery it’s absolutely great! If you are looking for something reliable and durable that is definitely it! ... show more
Reviewed in the United States on October 16, 2025 by Sara Sara

  • Beautiful
Style: Ceramic Color: Cloud Size: 8
Excellent and beautiful ring
Reviewed in the United States on January 23, 2026 by Abel Pete Roque

  • A brand partnership that I absolutely was stoked about
Style: Ceramic Color: Cloud Size: 6
The media could not be loaded. This has to be my favorite partnership. I’ve done yet. I’ve always been a little bit hesitant about our rings and I recently got the opportunity to partner with their company and I cannot say enough good things. I’m actually shocked at how much I’d like it. it’s comfortable and stylish and gives me every bit of information. I need to know to better my health. ... show more
Reviewed in the United States on October 22, 2025 by Tanna Daily

  • The best purchase
Style: Ceramic Color: Cloud Size: 8
The Oura Ring in ceramic is honestly the best purchase I’ve ever made. It’s sleek, comfortable, and looks amazing, but what truly makes it special is how accurately it tracks my health and daily wellbeing. From sleep quality to recovery and activity levels, it gives me insights that actually help me feel better every day. I can’t imagine going without it now — absolutely worth it! ... show more
Reviewed in the United States on October 16, 2025 by Anastasiia Kysel Anastasiia Kysel

  • Sleek design
Style: Ceramic Color: Cloud Size: 8
I got the ceramic one in size 8, and it fits perfectly- comfortable enough to wear 24/7, even while sleeping. The design looks sleek and elegant, and it tracks my sleep, readiness, and daily activity so accurately. The app is super intuitive and really helps me understand my body better. Totally worth it! ... show more
Reviewed in the United States on October 16, 2025 by Tatiana Tatiana

  • ⭐️⭐️⭐️⭐️
Style: Ceramic Color: Cloud Size: 9
The media could not be loaded. If you care about both style and health data, this product is a great choice. It’s perfect for someone who doesn’t want to wear a smartwatch 24/7 but still wants continuous wellness tracking in a discreet and elegant way. The ceramic finish makes it stand out, and the data insights are genuinely useful, especially for improving sleep and recovery. ... show more
Reviewed in the United States on October 21, 2025 by Yuliia Bezhenar

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