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Oura Ring 4 Ceramic Tide - Size 9 - Size Before You Buy

  • Based on 140 reviews
Condition: New
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$499.00 Why this price?

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Availability: In Stock.
Fulfilled by Amazon

Arrives Sunday, Mar 1
Order within 15 hours and 28 minutes
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Style: Ceramic


Color: Tide


Size: 9


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: 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: GPS Via Smartphone


Shape: Round


Brand: OURA


Model Name: 010-02238-03


Style: Ceramic


Package Dimensions: 4.57 x 4.45 x 1.38 inches


Item Weight: 6.7 ounces


Item model number: JZ90-57461-09


Batteries: 1 Lithium Polymer batteries required. (included)


OS: Proprietary OS


Connectivity technologies: Bluetooth


GPS: GPS Via Smartphone


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


Other display features: Wireless


Human Interface Input: Buttons


Color: Tide


Whats in the box: Information Booklet, Oura Ring 4 Ceramic, Oura Ring 4 Charger, Quick Start Guide, USB Cable


Manufacturer: Oura


Date First Available: October 1, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Mar 1

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


  • love it!
love it! I use it everyday to track my sleep and health metrics. plus, its comfortable and cute. ive had several people ask me about it. i have the blue ring.
Reviewed in the United States on December 12, 2025 by Jessica and Jon

  • Ring works but was scratched
This is my second ring; I had an Oura 3. Size 9 is a little loose, but seems to be able to sense; size 8, the size of my older ring, was too tight. The ring was scratched on arrival or at least has dark streaks on it which will not come off, so I was sorry I didn't get another metal ring. It seems to function properly so I am not going to return it. Ceramic rings are a nice idea, but their quality control may be a bit lacking. ... show more
Reviewed in the United States on February 15, 2026 by Susanna Goodman

  • What a ring
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Reviewed in the United States on December 18, 2025 by Jonathan G Neff

  • No Exchanges - Do Not Use FSA to Purchase
The ring itself is 5 stars. This is just a warning to anyone using FSA to purchase on amazon rather than directly from Oura or another retailer. Amazon is the only one that will not allow an exchange . You need to return it , then re purchase. This is fine if you’re not into the next year and any refund will go back to your previous years funds. So a total loss. I spent 4 hours getting useless support to finally get an answer. I was lied to by support and told my return would go onto a gift card so I can re purchase only to see in the return being issued back to the original payment I’m not trying to scam I legitimately want the ring, just in the correct size. Oura will not hep you unless you purchase through them on their website, not their amazon store. 100% will only make larger purchases from a store I can walk into or a place that will allow an exchange. Yes we both tried the ring sizer for Oura for the correct model. My husband was still a size off It definitely has a different feel than the plastic sizers. ... show more
Reviewed in the United States on January 24, 2026 by Amazon Customer

  • Bulky
Really bulky. Size up one if you’re not ordering their ring sizer. It runs small. App works great. Love the real time Heart Rate feature
Reviewed in the United States on January 15, 2026 by Our Alaska

  • Color Rubbing Off Already
I love my Oura ring and the info I get from it, but I’m super bummed the tide ceramic color already has scuffs. It looks like the color is literally rubbing off. And it’s not like I be working on the railroad, folks. I literally have an office job. Also, I’ve had it about a month. Blah.
Reviewed in the United States on February 9, 2026 by Amanda Deaton Amanda Deaton

  • Oura don't buy
I've had an Oura ring since nearly the beginning. I'm on the last generation. Never again. Once they went to the membership at $6 and month it became useless. Why should I pay that much for a ring, my 3rd, not including the faulty one. Total waste of money
Reviewed in the United States on November 1, 2025 by Kelly

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