Add to your order
- Coverage for accidental damage including drops, spills, and broken parts, as well as breakdowns (plans vary)
- 24/7 support when you need it.
- Quick, easy, and frustration-free claims.
- No Additional Cost: You pay nothing for repairs – parts, labor, and shipping included.
- Coverage: Plan starts on the date of purchase. Drops, spills and cracked screens due to normal use are covered from day one. Malfunctions are covered after the manufacturer's warranty. Real experts are available 24/7 to help with set-up, connectivity issues, troubleshooting and much more.
- Easy Claims Process: File a claim anytime online or by phone. Most claims approved within minutes. If we can’t repair it, we’ll send you an Amazon e-gift card for the purchase price of your covered product or replace it.
- Product Eligibility: Plan must be purchased with a product or within 30 days of the product purchase. Pre-existing conditions are not covered.
- Terms & Details: More information about this protection plan is available within the “Product guides and documents” section. Simply click “User Guide” for more info. Terms & Conditions will be available in Your Orders on Amazon. Asurion will also email your plan confirmation with Terms & Conditions to the address associated with your Amazon account within 24 hours of purchase.
- No Additional Cost: You pay nothing for repairs – parts, labor, and shipping included.
- Coverage: Plan starts on the date of purchase. Drops, spills and cracked screens due to normal use are covered from day one. Malfunctions are covered after the manufacturer's warranty. Real experts are available 24/7 to help with set-up, connectivity issues, troubleshooting and much more.
- Easy Claims Process: File a claim anytime online or by phone. Most claims approved within minutes. If we can’t repair it, we’ll send you an Amazon e-gift card for the purchase price of your covered product or replace it.
- Product Eligibility: Plan must be purchased with a product or within 30 days of the product purchase. Pre-existing conditions are not covered.
- Terms & Details: More information about this protection plan is available within the “Product guides and documents” section. Simply click “User Guide” for more info. Terms & Conditions will be available in Your Orders on Amazon. Asurion will also email your plan confirmation with Terms & Conditions to the address associated with your Amazon account within 24 hours of purchase.
- EXTENSIVE COVERAGE: Protection for all your eligible products purchased from Amazon. (Note: Products used commercially or for a business are excluded)
- EXCEPTIONAL PROTECTION: Including malfunctions and failures, plus drops or spills for eligible portable items.
- PAST & FUTURE PURCHASES COVERED: You're protected on eligible items purchased within the last year and new purchases going forward, including this purchase — starting 30 days after enrollment.
- QUICK & EASY CLAIMS: File a claim in minutes at Asurion.com/amazon. We'll repair, replace, or reimburse you up to the purchase price (excluding tax).
- NO HIDDEN FEES. You’re covered for up to $5,000 in total claims per 12-month period. Cancel anytime – your plan renews monthly until canceled. (Coupons applied at checkout do not renew monthly.)
Add to your order
- Coverage for accidental damage including drops, spills, and broken parts, as well as breakdowns (plans vary)
- 24/7 support when you need it.
- Quick, easy, and frustration-free claims.

Enjoy fast, free delivery, exclusive deals, and award-winning movies & TV shows with Prime
Try Prime
and start saving today with fast, free delivery
Amazon Prime includes:
Fast, FREE Delivery is available to Prime members. To join, select "Try Amazon Prime and start saving today with Fast, FREE Delivery" below the Add to Cart button.
Amazon Prime members enjoy:- Cardmembers earn 5% Back at Amazon.com with a Prime Credit Card.
- Unlimited Free Two-Day Delivery
- Streaming of thousands of movies and TV shows with limited ads on Prime Video.
- A Kindle book to borrow for free each month - with no due dates
- Listen to over 2 million songs and hundreds of playlists
- Unlimited photo storage with anywhere access
Important: Your credit card will NOT be charged when you start your free trial or if you cancel during the trial period. If you're happy with Amazon Prime, do nothing. At the end of the free trial, your membership will automatically upgrade to a monthly membership.
-
-
-
-
-
-
-
10 VIDEOS
-

Image Unavailable
Color:
-
-
-
- To view this video download Flash Player
Oura Ring 4 - Gold - Size 4 - Smart Ring - Size First with Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life
Return this item for free
We offer easy, convenient returns with at least one free return option: no shipping charges. All returns must comply with our returns policy.
Learn more about free returns.- Go to your orders and start the return
- Select your preferred free shipping option
- Drop off and leave!
Purchase options and add-ons
Special Feature | Heart Rate Monitor, Sleep Monitor |
Connectivity Technology | Bluetooth, USB |
Wireless Communication Standard | Bluetooth |
Battery Cell Composition | Lithium Polymer |
Shape | Round |
Brand | OURA |
Color | Gold |
Compatible Devices | Smartphone |
Display Type | Analog |
Water Resistance Level | Water Resistant |
About this item
- SIZE BEFORE YOU BUY - Oura Ring 4 sizes are different from standard ring sizes. Size yourself with the Oura Ring 4 Sizing Kit. For additional details, see “From the brand” section below
- 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 30 biometrics, including sleep, activity, stress, heart health, and women’s 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 — you’re free to forget it’s on. Until you start getting compliments
- 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
- SYNC WITH YOUR FAVORITE APPS - Compatible with iOS and Android — Oura seamlessly integrates with over 40 apps including Apple Health, Google Health Connect, Natural Cycles, Flo, Strava, & more
- HSA/FSA ELIGIBLE - We can accept HSA or FSA funds for the following: Oura Ring, Oura Ring Chargers
- LOOKING FOR THE BEST HEALTH TRACKER? - Whether you’re searching for a sleep ring or fitness ring, Oura Ring 4 is for you — this revolutionary smart ring that allows you to discreetly track your sleep, activity, recovery and stress — in style
Videos for similar products
From the manufacturer

-
Size before you buy
The Oura Ring 4 Sizing Kit is the best way to ensure an accurate experience. With a purchase of the sizing kit, you'll receive a $10 Amazon credit towards your Oura Ring 4.
-
Easy to wear, everywhere
Sleek and comfortable, Oura Ring seamlessly fits into your life from a workout to a night out.
-
No interruptions
Stay present without notifications on your wrist. Check the Oura App when you want to.
-
Built to last
Oura Ring 4 is fully titanium: one of the strongest metals on earth. Durable, lightweight, water resistant.
-
Accurate by design
Oura Ring 4 delivers incredibly accurate data and personalized health insights to help you be at your best.

-
Sleep
Wake up to in-depth sleep analysis, so you can improve your habits and transform how you feel.
-
Activity
Whether you're running a marathon or running errands, Oura tracks your daily activity and workouts while helping you strike a balance between movement and recovery.
-
Stress
Oura will help you identify signs of stress and understand how well your body handles it. You'll know when you need to incorporate more self-care practices and how to recover from long term stressors.
-
Metabolic Health
See a nutritional breakdown of your meals and understand how what you eat impacts your holistic health. Integrate the Stelo Glucose Biosensor (sold separately) to track your glucose levels.
-
Heart Health
From monitoring your daily heart rate and HRV to discovering your Cardiovascular Age and Cardio Capacity, Oura helps you take care of one of the key indicators of your overall health — your heart.
-
Women’s Health
Your cycle impacts your mood, sleep, activity and more, every day. Oura helps you understand how your cycle affects your body, so you can make better, informed decisions about your holistic health.
Size Before You Buy

Step 1:
Purchase an Oura Ring 4 Sizing Kit and receive a $10 Amazon credit towards your Oura Ring 4.

Step 2:
Purchase your Oura Ring 4, the $10 credit will be automatically applied at checkout.

Step 3:
Slip on your Oura Ring 4 and download the Oura App.

Step 4:
New members get the first month of Oura Membership free, then it’s $5.99 per month.
What's in the Box

Oura Ring 4

Oura Ring 4 Charger and USB-C Cable
Videos
What's in the box
Product information
Product Dimensions | 0.98 x 0.98 x 0.28 inches |
---|---|
Item Weight | 6.7 ounces |
ASIN | B0D9WW8V53 |
Item model number | JZ90-54216-04 |
Batteries | 1 Lithium Polymer batteries required. (included) |
Customer Reviews |
4.3 out of 5 stars |
Best Sellers Rank | #49,459 in Electronics (See Top 100 in Electronics) #274 in Smart Rings |
Connectivity technologies | Bluetooth, USB |
Special features | Heart Rate Monitor, Sleep Monitor |
Other display features | Wireless |
Color | Gold |
Whats in the box | Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide |
Manufacturer | Oura |
Country of Origin | Estonia |
Date First Available | October 3, 2024 |
Warranty & Support
Feedback

Oura Ring 4 - Gold - Size 4 - Smart Ring - Size First with Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life
Share:
Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.
Where did you see a lower price?
Fields with an asterisk * are required
Product Description
Introducing Oura Ring 4: the latest evolution of the revolutionary smart ring. Oura Ring 4 brings you closer to what matters most — your health. The updated all-titanium design is powered by Smart Sensing, a new sensing platform that doesn’t just measure your biometrics, it adapts to you, providing insights into over 30 biometrics including sleep, readiness, activity, heart health, stress, metabolic health and women’s health. Oura Ring 4 quietly and comfortably monitors your health and with up to 8 days of battery life — you can forget it’s even on. Sleeker, smarter and more accurate than ever, Oura Ring 4 is made for you. Oura Ring 4 is FSA/HSA Eligible — we can accept FSA or HSA funds for the following: Oura Ring 4, additional chargers, and shipping. IMPORTANT: Size yourself with the Oura Ring 4 Sizing Kit before you buy — Oura Ring 4 is not US standard sizing, and finding the right size will result in the best experience possible. With an Oura Ring 4 Sizing Kit purchase, a credit will automatically be applied to your Oura Ring 4 at checkout.
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find the Oura Ring to be a powerful health tracking tool that provides comprehensive sleep and readiness scores, and they appreciate its comfort and quality, noting it's better than the Apple Watch. The battery life and sizing receive mixed feedback - while some report it lasts about 6 days, others say it only lasts one month, and while some find it perfect for sizing, others note the sizes don't match standard ring sizing. Functionality and value for money also get mixed reviews, with some saying it's well worth the price while others find it overpriced.
AI-generated from the text of customer reviews
Customers appreciate the health tracking features of the ring, particularly its ability to track sleep, stress, and maximum heart rate, with one customer noting it's good at spotting fitness events.
"...However, the ring really is good at spotting fitness "events" and I love that when opening the app, there's a backlog of events that you have to..." Read more
"...science will like this, you can literally experiment and see the exact results for yourself. Accuracy: I would say this is 95% accurate...." Read more
"...I’ve already recommended it to several people because it’s been that impactful. If you’re on the fence about it, just go for it—you won’t regret it!" Read more
"...While the data it provides is valuable, I wish they would offer a one-time purchase option or a more affordable subscription plan...." Read more
Customers appreciate the ring's sleep tracking features, which provide insights into sleep habits and activity levels, with one customer noting its accurate monitoring of heart rate and sleep parameters.
"...fitness "events" and I love that when opening the app, there's a backlog of events that you have to confirm the type of activity...." Read more
"...It’s increased my understanding of sleep, the importance of exercise for sleep, and dare I say, made me a better person...." Read more
"...The sleep tracking is fantastic! It's been incredibly insightful to see our sleep patterns and get data on our heart rate and activity levels...." Read more
"...Next, the Sleep function, even with learning curve, seemed to function out of the box, HOWEVER, after the first recharge of the Ring 4, there was an..." Read more
Customers find the Oura Ring to be fantastic and amazing, with one customer describing it as a perfectly lovely wellness ring.
"...If you’ve never had an Oura ring: this product is amazing. So comfortable, more so than a watch...." Read more
"...It’s an incredible device that gives me real insight into how I’m feeling, what’s going on with my body, and even why certain things might be..." Read more
"...It helps me track my sleep and activity much better than my Apple Watch. It was super easy to set up and the app is very good...." Read more
"...I guessed on my size and it’s perfect. It automatically knows when I am working out or going for a walk...." Read more
Customers find the Oura Ring comfortable and easy to wear, particularly for sleeping, with one customer noting it feels like you're not wearing it at all.
"...One month later, I am glad I went with the smaller size. No discomfort and still using water in the morning to take off the ring before I..." Read more
"...Conclusion: I love the Oura ring. It’s more comfortable than an Apple Watch or a woop in my experience. Way, WAY more comfortable...." Read more
"...The ring itself is sleek and comfortable to wear, and the battery life is truly impressive – lasting nearly a week...." Read more
"...I went one size up from my normal ring size, and it fits very comfortably and stays put during these activities...." Read more
Customers have mixed experiences with the ring's functionality, with some enjoying all its features and finding it very useful, while others report it failing soon after purchase or stopping working within three months.
"...simply encouraging me to be more active, which has lead to a good impact on my health. Overall, pretty satisfied with the ring...." Read more
"...on things before I’m consciously aware of them, which helps me get ahead of potential issues or make adjustments to my activity, sleep, or habits...." Read more
"...watch, of course, because it does not display messages and does not have access to apps that I use. The best of all worlds is to have both." Read more
"...far, far lower cost AND the same updates, assessments, insights and suggestions BUT with NO subscription fee...." Read more
Customers have mixed experiences with the ring's battery life, with some reporting it lasts days while others mention it only lasts one month or needs charging every 3 days.
"...Edit: a little disappointed the battery lasts 4-5 days not 8 like they claim" Read more
"...One of the standout features for me is the battery life. It lasts several days—almost a week—which is impressive for how much data it’s tracking...." Read more
"...It does NOT get the battery life they advertise. I'm getting about 5 days on a charge...." Read more
"...The ring itself is sleek and comfortable to wear, and the battery life is truly impressive – lasting nearly a week...." Read more
Customers have mixed experiences with the sizing kit, with some finding it perfect for their index finger while others report it being much larger than anticipated.
"...The new size is great for me. My old ring was snug on my ring finger...." Read more
"I like the ring but my ring size is too big and the website is unclear on how to exchange the size." Read more
"...Comfort-wise, it’s spot on. It’s the exact same size as my old ring, so it doesn’t feel any different even though they recommend wearing it on your..." Read more
"...an seemingly identical App for all appearances seen, comes as an adjustable ring using the same high-end materials and sensor setup AND which..." Read more
Customers have mixed opinions about the ring's value for money, with some finding it worth the cost while others feel it's not worth the price tag, particularly due to ongoing subscription costs.
"...expensive, adding a monthly subscription feels unnecessary and a bit greedy...." Read more
"...It does give the average value during sleep, and it seems to think my sleep is ok, which reassures me that I probably don't have sleep apnea...." Read more
"...While understandable, it makes it impossible to fully assess the personal value and utility of the Ring 4 in the 30-day period for returns...." Read more
"...The fitbit I had before was much better! So to me the price is not worth it, at all! In fact I cant wait to return it!..." Read more
Reviews with images

Good but bulky.
Top reviews from the United States
There was a problem filtering reviews. Please reload the page.
- Reviewed in the United States on February 19, 2025Color: StealthSize: 9Verified PurchaseI've been wearing the oura ring gen 4, stealth, size 9 for exactly one month now.
First off, sizing.
I was between sizes 9 and 10. I opted for the smaller size using this little test: Using the plastic ring sizes, if you cannot take off the ring in the morning when your fingers are puffiest, and the only way to do so is by wetting your finger to add some slippage, then that's the right size. With the bigger size, I was able to take off the ring in the morning without using water so I felt that size was too big. One month later, I am glad I went with the smaller size. No discomfort and still using water in the morning to take off the ring before I shower.
Comfort
I wear it on my right index finger. I did not like in between fingers, which is the reason I wear a silicone wedding band. But overall, it's not very intrusive. It's annoying to write with a pen or pencil but that's not often.
Appearance
I love the stealth color. Already got a few scratches on my palm side, which is a little annoying. But I tell myself that at least the back of my hand, the ring looks like new. I use these silicone protectors when working out with weight and it does a great job. The scratches came from handling things where I should have taken off my ring. I wish there were some way to make the scratches less visible as these scratches you see a shiny silver metal which contrasts a lot!
Battery
No issues. I charge it every few days or so while I shower. I am manually trying to keep the battery at between 25% and 75% but most often I forget that I left it charging and it goes back to 100%.
Sleep Tracking
I'm not a power user. I enjoy checking in the morning my sleep score and compare it to how I thought my sleep went the night prior. Pretty accurate sleep tracking in my opinion.
Fitness Tracking.
So we all know that the step counter is way off so I don't really care about that. However, the ring really is good at spotting fitness "events" and I love that when opening the app, there's a backlog of events that you have to confirm the type of activity. My top three are: housework, walking, and HIIT. The app gets better at recognizing the events so most times I am just confirming instead of categorizing. Overall, this level of tracking is simply encouraging me to be more active, which has lead to a good impact on my health.
Overall, pretty satisfied with the ring. Glad I got it.
- Reviewed in the United States on March 18, 2025Color: BlackSize: 7Verified PurchaseI’ve been supporting Oura since it was a kickstarter. I had the version 3 and decided not to upgrade but since my spouse lost her ver 3 I gave her mine and ordered this.
If you’ve never had an Oura ring: this product is amazing. So comfortable, more so than a watch. The app is great, I’ve learned so much about sleep habits, what to do and not to do for sleep. Lovers of science will like this, you can literally experiment and see the exact results for yourself.
Accuracy: I would say this is 95% accurate. Again, I’ve been using this for about 5 years. So I’ve seen the accuracy improve IMMENSELY over the years. Version 4 is the best yet. Better than any other sleep tracker I’ve tried and I’ve tried a lot. The biggest inaccuracy is every now and then I’ll get up to pee in the middle of the night and it will think I woke up for the day. Sometimes it knows I just went to pee sometimes not. Since I noticed it, I take my ring off if I get up to go to the toilet and it fixes the issue—just don’t forget to put it back on!
Key info for consumers: the fit is slightly larger than the version 3. To be exact I would say the version 4 is about half a size larger. So the new size 7 for example, would be a size 7.5 on the old version 3 and older models.
The new size is great for me. My old ring was snug on my ring finger. So now I can wear the new one on my pointer finger and even middle finger depending on how hot it is. It all depends on the temperature outside due to our hands expanding/shrinking in heat/cold. Hot days I’ll wear on my ring finger, cold days I can wear on my index or middle finger.
Conclusion: I love the Oura ring. It’s more comfortable than an Apple Watch or a woop in my experience. Way, WAY more comfortable. It’s also very accurate and the info is extremely useful. It’s increased my understanding of sleep, the importance of exercise for sleep, and dare I say, made me a better person. Getting better sleep takes effort, and this is merely a tool to help you do that. Getting better sleep can 100% make you a better person and I speak from my own experience.
- Reviewed in the United States on March 28, 2025Color: SilverSize: 9Verified PurchaseThe Oura Ring has easily become one of my top purchases—not just of this year, but honestly, of all time. It’s an incredible device that gives me real insight into how I’m feeling, what’s going on with my body, and even why certain things might be happening. Sometimes it even picks up on things before I’m consciously aware of them, which helps me get ahead of potential issues or make adjustments to my activity, sleep, or habits. It’s made a real difference in how I approach my day-to-day life and helped me make better decisions for my health and well-being.
One of the standout features for me is the battery life. It lasts several days—almost a week—which is impressive for how much data it’s tracking. I also love that it’s not pushy with recommendations like some other health apps or gadgets. It’s more like having a helpful guide that you can check in with as you choose, rather than something that’s constantly nagging you to change your routine.
Comfort-wise, it’s spot on. It’s the exact same size as my old ring, so it doesn’t feel any different even though they recommend wearing it on your index or middle finger. I’ve been wearing it on my ring finger without any issues—my readings are great, and it’s held up perfectly. It’s durable, waterproof, and just feels like a natural part of my routine now.
I’ve already recommended it to several people because it’s been that impactful. If you’re on the fence about it, just go for it—you won’t regret it!
Top reviews from other countries
- Felix SngReviewed in Singapore on March 1, 2025
1.0 out of 5 stars Oura Ring cannot be delivered to some locations.
Color: Sizing KitSize: Sizing KitVerified PurchaseGreat sizing tool. However, Amazon SG doesnt allow the actual Oura Ring to be delivered. The status has been “Ordered Received…”
-
Flavio LópezReviewed in Mexico on December 22, 2024
5.0 out of 5 stars Es un excelente producto
Además del servicio y puntualidad de entrega, es un producto extraordinario, gran herramienta para conocernos
-
G.BraidottiReviewed in Italy on May 11, 2025
5.0 out of 5 stars Indicatori utili per la salute
Color: BlackSize: 11Verified PurchaseAvevo già il primo modello, mi interessava capire qualcosa di più di questi dispositivi, anche a livello professionale. Avevo interrotto l’abbonamento infastidita dalla scoperta che il dispositivo da solo non basta: senza sottoscrivere il fee annuale non si ha accesso ai dati. Quest’anno ho ripreso, dopo un po’ di ricerche, il nuovo Oura ed è davvero ricco di funzioni. Per ora direi ottimo.
-
Kindle CustomerReviewed in Mexico on December 11, 2024
5.0 out of 5 stars Satisfecha con el producto
Color: Sizing KitSize: Sizing KitVerified PurchaseSatisfecha con el producto
-
Jean-MichelReviewed in Germany on April 18, 2025
5.0 out of 5 stars Perfekte Möglichkeit Schlaf zu analysieren
Color: StealthSize: 10Verified PurchaseWürde ich noch mal kaufen