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OURA

Oura Ring 4 - Ceramic Cloud - Size 10 - Sleep, Activity, Women’s Health, AI Advisor, Up to 8 Days of Battery Life, Size Before You Buy, Android & iOS Compatible

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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Apr 18
Order within 2 hours and 49 minutes
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Style: Ceramic


Color: Cloud


Size: 10


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

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.

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


Target Audience: Unisex Adults


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: Health and Wellness Tracking App


Water Resistance Depth: 100 Meters


Supported Satellite Navigation System: GPS


Metrics Measured: Body Temperature, Menstrual Cycle, Sleep Duration, Stress


Shape: Round


Style Name: Ceramic


Color: Cloud


Battery Cell Type: Lithium Polymer


Battery Average Life: 5 days


Battery Charge Time: 80 minutes


Display Type: No Display


Item Weight: 6.7 Ounces


Brand: OURA


Target Audience: Unisex Adults


Age Range Description: Adult


Model Number: JZ90-57460-10


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


Wearable Computer Type: Smart Ring


Manufacturer: Oura


Unit Count: 1.0 Count


Warranty Description: 1 Year Manufacturer


Connectivity Technology: Bluetooth


Wireless Compability: Bluetooth


Communication Feature: Bluetooth, GPS


Compatible Devices: Smartphone


Compatible Phone Models: Android Devices, iOS Devices


Warranty Type: Limited


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Apr 18

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.

Similar Products

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
    • Track your Biometrics without Interruptions
Style: Ceramic Color: Tide Size: 9
Review Image by SarahMarie
I purchased the Oura Ring 4 right before heading to a wellness retreat in Arizona because I wanted to disconnect from constantly wearing my Apple Watch and being tied to my phone—and it delivered exactly what I was looking for. The ring tracks many of the same key metrics (sleep, activity, readiness), but in a much more subtle, low-maintenance way. What really stands out is the app experience: the UI is clean, intuitive, and actually enjoyable to use. It presents data in a way that feels actionable without being overwhelming. The sleep tracking has been especially helpful. The level of detail, like sleep stages, restfulness, and trends over time and has given me better insight into how my habits impact recovery. I also appreciate how it passively tracks activity throughout the day without needing to manually log everything. Overall, it’s been a great alternative to a smartwatch, especially if you're trying to be more mindful and less connected while still keeping tabs on your health. Comfortable, discreet, and surprisingly powerful. The ceramic one seems durable and I picked up a polishing cloth for it. Charging is easy with the included charger. ... show more
Reviewed in the United States on March 29, 2026 by SarahMarie
    • LOVE IT!!!! NO idea why people have terrible ratings. It's AMAZING!!!!
Style: Ceramic Color: Petal Size: 8
I LOVE MY RING!!!! I originally got the metallic ones and within a few days it seemed it'd be easy to scratch...then they came out with the ceramic and I was SO EXCITED! I got the beautiful pearly pink one and it does not scratch ever. I am a busy mom of 4 and it is beautiful, feminine and has no scratches. It's accurate. Charges well. Connects well. It's sooo strange that people wrote such odd negative reviews here. I've had ZERO problems and it's ammmmmazing. Plus you have 30 days to return it to try so give it a try! :) My hubby is going to get one too in the midnight blue from their website. ... show more
Reviewed in the United States on March 2, 2026 by Diane_Outdoors
    • Beautiful design with genuinely useful health insights
Style: Ceramic Color: Tide Size: 10
I bought the Oura Ring 4 Ceramic (Tide) for my wife and she absolutely loves it. The ceramic finish looks clean and elegant — it doesn’t feel like a bulky piece of tech, just a really nice ring she actually wants to wear every day. Beyond the look, she’s been finding the health insights genuinely useful, especially the sleep and recovery tracking. It’s given her a better understanding of how well she’s actually resting and how that impacts her day. The app is straightforward and easy to interpret, which makes it more practical than overwhelming. Overall, it’s been a great combination of style and function. Definitely a win. ... show more
Reviewed in the United States on February 24, 2026 by E. Spofford
    • Best accurate wearable!
Style: Ceramic Color: Tide Size: 6
This is an amazing wearable. Probably the best one I’ve ever used. Not only the product itself (the ceramic version I have ) is stunning the app interface is colorful and easy to use. It’s very pleasant to open up that app to check my progress and I do that at least 10 times a day. Worth getting if you are on top of your health. ... show more
Reviewed in the United States on March 19, 2026 by Helena Ricker
    • Smart, Sleek, and Surprisingly Insightful!
Style: Ceramic Color: Cloud Size: 9
Review Image by Amber_UGC
I absolutely love my Oura Ring 4! It’s lightweight, stylish, and so comfortable that I forget I’m even wearing it. The sleep tracking is incredibly accurate and has helped me improve my bedtime routine. I also appreciate the readiness and activity scores — they make it easy to understand how my body is doing day to day. The battery life is impressive, lasting several days on a single charge, and the app is very user-friendly with clear insights and tips. I also love that it looks like a simple, elegant ring rather than a bulky fitness tracker. If you’re serious about improving your health, sleep, and daily performance, the Oura Ring 4 is worth every penny. It’s like having a personal wellness coach on your finger! ... show more
Reviewed in the United States on October 8, 2025 by Amber_UGC
    • 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
    • Love it!
Style: Ceramic Color: Tide Size: 5
I love this ring! I ordered the color Tide & its gorgeous! It is a little more bulky than a typical ring but I expected that & its not umcomfortable. I found it very easy to set up. They say to size down if in-between sizes but in my opinion, they run small & you should size up. I notmally wear a 4.5 & I ordered a 5 which is more than snug. Had I ordered a 4, I wouldn’t be able to get the ring off! I also suggest ordering some ring covers to protect the ring & change up the color if you want. ... show more
Reviewed in the United States on February 8, 2026 by Melissa McCammon

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