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OURA

Oura Ring 4 - Smart Ring - Ceramic Petal - Size 5 - Sleep, Activity, Women's Health, AI Advisor, Up to 8 Days of Battery Life, Oura App, Android & iOS Compatible

Based on 637 reviews
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$399.00
Save $100.00 was $499.00

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At a glance

Condition
New
Style
Ceramic
Color
Petal
Size
5
Model
JZ90-57459-05
Storage
16 MB
Dimensions
0.31 x 0.31 x 0.14 in
Warranty
1 Year Manufacturer
Works with
Smartphone

Features 1

  • 161

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.

Specs 38

Operating System Android, iOS
Memory Storage Capacity 16 MB
Special Feature Activity Tracker, Cycle Tracking, Daily Workout Memory, Lightweight
Battery Capacity 15
Connectivity Technology Bluetooth
Wireless Communication Standard Bluetooth
Battery Cell Composition Lithium Polymer
GPS No GPS

Frequently asked questions

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

Learn more about financing & leasing here.

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Top Amazon Reviews

Track your Biometrics without Interruptions 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 Reviewed in the United States on March 29, 2026 by SarahMarie
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
LOVE IT!!!! NO idea why people have terrible ratings. It's AMAZING!!!!
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
Smart, Sleek, and Surprisingly Insightful! 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 Reviewed in the United States on October 8, 2025 by Amber_UGC
Buy this ring!
Style: Ceramic Color: Cloud Size: 13
Bought for husband. He loves it and isn't a ring guy...like no wedding ring kinda guy. Says he wishes this was around when he bought is smart watch. He wont sleep with a watch, but the ring is comfortable. He likes the information it gives and the ease of tracking things. He is not a gentle creature and so far its holding up and still looks brans new. He gets a lot of compliments and questions about it. ... show more
Reviewed in the United States on May 6, 2026 by Perfect size for a king sized bed with blanket to spare/share.
Nice ring
Style: Ceramic Color: Tide Size: 11
The app was easy to use to set up. I open a lot of card board at work, and the ceramic has held up well. No scratches. It fits just like the sizer, feels better actually. I have an Apple Watch and the Oura ring, and they give me different amount of steps walked each day. I don’t know which one is more accurate. If the fitness tracking is important, keep that in mind. Charging is fast and easy and I can go about 5 days before charging. Overall, I would recommend. ... show more
Reviewed in the United States on June 28, 2026 by Cherie DeWitt
Stylish, does what’s expected.
Love what the ring does. Happy with the stats you get. I bought a less expensive version of a smart ring and it only lasted 4 months! Color is pretty. Ceramic exterior not very scratch resistant though.
Reviewed in the United States on May 2, 2026 by Robin A
Great for sleep and recovery tracking without wearing a bulky watch Great for sleep and recovery tracking without wearing a bulky watch
Style: Ceramic Color: Cloud Size: 9
Review Image by Laura R
Review Image by Laura R
Review Image by Laura R
I’ve really enjoyed using this ring so far. It has a good lightweight fit, comfortable, and much less distracting than wearing a smartwatch all day and night. Great functions including sleep tracking which has been especially helpful and honestly feels pretty accurate compared to how rested I actually feel. The app is clean and easy to understand but it is not included and you have to pay a monthly subscription. I like being able to see trends with sleep, stress, activity, and recovery all in one place. Very duarable. The ceramic cloud color also looks sleek and neutral enough to wear with everything. Battery life has been solid too. Expensive, yes, but if you’re into health tracking and want something more minimal than a watch, I think it’s worth it. ... show more
Reviewed in the United States on May 23, 2026 Reviewed in the United States on May 23, 2026 by Laura R
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