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

  • Based on 137 reviews
Condition: New
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$499.00 Why this price?
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Availability: In Stock.
Fulfilled by Amazon

Arrives Friday, Mar 13
Order within 15 hours and 46 minutes
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Color: C - Petal


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: iOS, Android


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: C - Petal


Package Dimensions: 4.57 x 4.45 x 1.38 inches


Item Weight: 6.7 ounces


Item model number: JZ90-57459-08


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: Friday, Mar 13

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


  • Excellent
Color: C - Petal Size: 7
This review is actually for the Ceramic Oura Ring-"Tide" color-size 8-I bought the "Petal" Ceramic Ring size 7 ( last month) but could not get it to connect at all so I returned it-I tried again this month with the "Tide" Ceramic Ring-it connected easily and set up was a breeze. I have worn the ring for 6 days now after fully charging it last Wednesday when it arrived-I am impressed with battery life because after 6 days it reached 37% so I put it on the charger/it charged rather quickly -less than an hour. So far I am really pleased with this Oura Ring-I tried a couple different ring covers but just didn't like them and so far-no scratches-I've done normal things-washed dishes-vacuumed-laundry etc. I mostly got it for my sleep and I must say I am amazed at the way it breaks down your sleep-quality-deep-REM-I believe it is quite accurate as I usually wake up every 2-3 hours. It also has a setting to detect sleep apnea as well as your lowest/highest resting heart rate-There are other settings for activity-calories burned-steps-workouts. Some people may have to get used to wearing it as at first it felt a little bulky but after 6 days I find it quite comfortable-the Oura Ring app is easy to navigate as well. ... show more
Reviewed in the United States on November 20, 2025 by Phantomsue

  • Like a Apple Watch for your finger
Color: C - Petal Size: 7
I got this from my friend for Christmas and she loves it. She likes how it tracks. Everything in the fit fits pretty good. She can use it on her ring finger or middle finger. The color is also really pretty the battery. Life is pretty good at last like a couple weeks I think the only thing is that sometimes her fingers swell up around it so she has to take it off. ... show more
Reviewed in the United States on February 8, 2026 by Ari

  • LOVE IT!!!! NO idea why people have terrible ratings. It's AMAZING!!!!
Color: C - 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

  • The ring that smells me better than my boyfriend
Color: C - Petal Size: 8
Let me tell you something: the Oura Ring 4 in Ceramic Petal is not just pretty — it is a tiny, psychic life coach that lives on my finger. This ring tells me EVERYTHING. How I slept. How I should sleep. How I thought I slept but apparently didn’t because it told me I was “restless” (rude but fair). It even knows when I’m being dramatic and calls it “elevated stress levels.” The color? Stunning. Like “soft feminine energy but also capable of running your entire wellness regimen” kind of vibe. I’ve gotten more compliments on this ring than any actual jewelry I own, and half the time people don’t even realize it’s tracking my whole life. And the accuracy? Chef’s kiss. I check it in the morning like I’m waiting for my report card. If it ever gives me an A+, I’m framing the screenshot. If you want a gorgeous ring that coaches your health, reads your mind, and gently drags you for staying up too late scrolling TikTok… this is it. Absolute perfection. 💖💍📊 ... show more
Reviewed in the United States on November 30, 2025 by The coconut bird

  • Wellness ring
Color: C - Petal Size: 9
I decided to get the Oura Ring because I wanted a health tracker that felt effortless and elegant. I started looking for a way to really understand my body — not just count steps or calories, but actually see how my sleep, stress, and energy connected. Setting it up was super simple — you just connect it to the Oura app, select your goals, and it starts tracking everything from your sleep quality and recovery to your activity levels and cycle patterns. What I love most is how it gives me personalized insights instead of just numbers. once I synced it with the app, it started giving me insights that actually made sense: how well I was recovering, how my hormones and cycle affected my sleep, even when my body needed to slow down. I absolutely love it. The battery life is almost 7 days I wore it 24/7. But is a very nice wellness tool. ... show more
Reviewed in the United States on October 27, 2025 by Stefany avendaño Stefany avendaño

  • Love
Color: C - Petal Size: 7
Love my new ring - so much easier than using my apple watch to track my health. The ceramic is durable and if it gets gray marks on it, they rub off with the cleaning towels provided! I forget it’s on and am able to sleep with it no problem. Battery life is insanely superior to Apple Watch as well. Love the petal color. Delivered overnight! ... show more
Reviewed in the United States on February 26, 2026 by Lalala Lalala

  • Ring stopped working within 2 weeks and pretty much impossible to get customer support.
Color: C - Petal Size: 7
The ring looked great, worked well for about 2 weeks but then wouldnt charge. Oura support started with ai and after that did not help, put me in a waiting line that at first said 18 minutes and kept creeping up and after 15 minutes, said it would be another 75 minutes. Disappointed, but see no option except return. Charger stopped working within 2 weeks and it is essentially impossible to get customer support. ... show more
Reviewed in the United States on December 29, 2025 by Matt

  • So much data that I didn’t know I wanted to know🤣
Color: C - Petal Size: 7
Oura rings are the best! I recently gave my original gen 4 to my niece and purchased the petal in 2 sizes small as I have lost weight. The sleep tracking is on point! Same as the stress tracking! Check my sleep data and it is spot on! If you want to know just about everything you could know about your body this is a definite must have! Super comfortable and the battery life is outstanding! No vibration no screens! Just wear it and check the app when you want! I can’t imagine my day and nights without now! So far the ceramic seems far more durable than the original shiny titanium and it feels smooth and comfortable on the fingers next to the one I wear my ring on. I love that the data lives on the ring then connects to the app when you open it. Data seems super accurate to how I am feeling! ... show more
Reviewed in the United States on November 8, 2025 by David David

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