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Oura Ring 4 - Ceramic Petal - Size 5 - Sleep, Activity, Women’s Health, AI Advisor, Up to 8 Days of Battery Life, Size Before You Buy, Android & iOS Compatible

  • Based on 133 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, May 4
Order within 17 hours and 28 minutes
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Color: C - Petal


Size: 5


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.

Operating System: Proprietary OS


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


Connectivity Technology: Bluetooth


Wireless Communication Standard: Bluetooth


Battery Cell Composition: Lithium Polymer


GPS: No GPS


Shape: Round


Brand: OURA


Style: Ceramic


Color: C - Petal


Operating System: Proprietary OS


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


GPS Geotagging Functionality: No GPS


Band Material Type: Ceramic


Water Resistance Level: Water Resistant


Human Interface Input: Buttons


Supported Application: Alarm, Fitness Tracker, Heart Rate Monitor, Pedometer, Sleep Monitor


Water Resistance Depth: 100 Meters


Metrics Measured: Sleep Duration, Activity, Stress, Heart Rate, Metabolic Health, Women's Health


Shape: Round


Style Name: Ceramic


Color: C - Petal


Connectivity Technology: Bluetooth


Wireless Compability: Bluetooth


Communication Feature: Bluetooth


Compatible Devices: Smartphone


Compatible Phone Models: Android Devices, iOS Devices


Brand: OURA


Target Audience: Unisex Adults


Age Range Description: Adult


Model Number: JZ90-57459-05


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


Warranty Description: 1 Year Manufacturer


Battery Cell Type: Lithium Polymer


Battery Average Life: 5 days


Battery Charge Time: 80 minutes


Display Type: No Display


Warranty Type: Limited


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, May 4

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
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  • 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


  • 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

  • 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

  • Ceramic finish holds up nicely!
Color: C - Petal Size: 10
This is my 3rd finish Oura ring and by far my favorite finish. I’ve worn it a few months now with no protector and it still looks like new. The silver and rose gold ones’ I had in the past showed signs of wear almost immediately. I’m considering gettting another color to swap between. Very happy with the ceramic for sure. ... show more
Reviewed in the United States on February 16, 2026 by Jeanette Maurer

  • 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

  • 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 even detects a nap! 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. I am quite impressed and can only say -you get what you pay for-this Ring is worth the price-I love it ... show more
Reviewed in the United States on November 20, 2025 by Phantomsue

  • Terrible customer service
Color: C - Petal Size: 7
The charger didn’t work correctly when we got the ring and stoped working completely after a month there was a small burn mark on the charger so I contacted the manufacturer. Surprise there are no humans only ai customer service. If you trust your entire company’s reputation to an unproven technology to save money on the back end I wouldn’t trust this company to stand behind their product at all. ... show more
Reviewed in the United States on February 10, 2026 by bob

  • Pretty color
Color: C - Petal Size: 9
Works great and stays charged for days
Reviewed in the United States on March 3, 2026 by Krissy

  • Great concept but ceramic is NOT scratch resistant.
Color: C - Petal Size: 10
Loveeee the ring. Cute, smooth and fits comfortably. The durability in the ring itself is great, but I’m pretty upset with how easily it has gotten scratches. The day I got it, it got scratched just by opening a door….. The ceramic is NOT scratch resistant. ALSO, it is a little bigger than the sizing ring fit, so it’s a little looser than I’d like. (Wish they made half sizes). Overall, I love the ring. The app is very user friendly. I love the concept and the information this ring gives me, I just wish I would have gotten the titanium instead or even a darker color because the scratches are visible. ... show more
Reviewed in the United States on March 9, 2026 by Cassidy Gerau

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