I’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.
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Frequently bought together
This item: Oura Ring 4 - Silver - Size 8 - Smart Ring - Size First with Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life
$349.00
Get it as soon as Thursday, Mar 27
In Stock
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$9.99
Get it as soon as Thursday, Mar 27
In Stock
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$17.95
Get it as soon as Thursday, Mar 27
In Stock
Total price: $00
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Sustainability features
This product has sustainability features recognized by trusted certifications.Made with chemicals safer for human health and the environment.As certified by
OEKO-TEX MADE IN GREEN
Made in Green by Oeko-Tex verifies that the article has been manufactured using processes with a reduced environmental impact and under socially responsible working conditions. The label also verifies that the product has been tested for substances that could harm the body and environment. Thanks to the unique product ID, each product can be easily traced by entering the certification number on the Label Check on the Made in Green website, where more information about the production facilities is provided.Certification NumberM1KN8XW04Sustainability features
This product has sustainability features recognized by trusted certifications.Reduced air and/or water in the product or packaging for more efficient transportation.As certified by
Compact by Design (Amazon-developed Certification)
Compact by Design identifies products that, while they may not always look very different, have a more efficient design. By reducing water and/or air in the product or packaging, these become more efficient to ship. At scale, these small differences in product size and weight lead to significant carbon emission reductions.Sustainability features
This product has sustainability features recognized by trusted certifications.The leather in this product was produced by a Leather Working Group (LWG) certified tannery, supporting more-responsible leather production. LWG brand members may make on-product claims if they have submitted a sourcing declaration and if the product contains >50% leather, and 100% of the leather is produced by a LWG certified tannery.As certified by
Leather Working Group
Leather Working Group (LWG) is a not-for-profit community organization dedicated to driving excellence in the production of more-sustainable leather. LWG aims to have a positive impact on the environment through driving resource efficiency in leather production, reduced waste generation and emissions, better chemical management and increased traceability. LWG brand members may make claims on meeting a number of criteria, including submitting a sourcing declaration stating the percentage of leather purchased from LWG certified facilities. A claim can only be made when a product contains leather as the prominent material and 100% of the leather was produced by a LWG-certified tannery.Sustainability features
This product has sustainability features recognized by trusted certifications.Made with chemicals safer for human health and the environment.As certified by
Global Recycled Standard
Products certified to the Global Recycled Standard (GRS) contain recycled content that has been independently verified at each stage of the supply chain, from the source to the final product. In addition, social, environmental, and chemical criteria related to processing are required. The purchase of Global Recycled Standard (GRS) certified products demonstrates demand for recycled content and best processing practices in the supply chain.Certification BodyBureau VeritasCertification NumberTE-00113421Sustainability features
This product has sustainability features recognized by trusted certifications.Carbon emissions from the lifecycle of this product were measured, reduced and offset.As certified by
Carbonfree Certified
Each Carbonfree Certified product goes through a cradle-to-grave assessment to determine the product’s carbon footprint. The carbon emissions associated with the product are reduced where possible, and remaining carbon emissions are offset with third-party verified carbon reduction projects in renewable energy, energy efficiency and forestry.Sustainability features
This product has sustainability features recognized by trusted certifications.Carbon emissions from the lifecycle of this product were measured, reduced and offset.As certified by
ClimatePartner certified
The Climate neutral label by ClimatePartner certifies that the carbon footprint of a product was calculated and all associated emissions were offset. Additionally, ClimatePartner encourages companies to set ambitious reduction targets and reduce their products' carbon footprints. The certificate number can be entered on ClimatePartner’s website for additional information such as the supported carbon offset project(s). ClimatePartner is improving lives by helping companies tackle climate change with practical solutions.Certification Number72BDL5
From the manufacturer
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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.
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Easy to wear, everywhere
Sleek and comfortable, Oura Ring seamlessly fits into your life from a workout to a night out.
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No interruptions
Stay present without notifications on your wrist. Check the Oura App when you want to.
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Built to last
Oura Ring 4 is fully titanium: one of the strongest metals on earth. Durable, lightweight, water resistant.
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Accurate by design
Oura Ring 4 delivers incredibly accurate data and personalized health insights to help you be at your best.
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Sleep
Wake up to in-depth sleep analysis, so you can improve your habits and transform how you feel.
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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.
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Readiness
Know when to push it and when to take it easy. Your Readiness Score tells you how energized you are using over 30 biometrics — it can even tell when you might be getting sick.
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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.
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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.
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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
Compare with similar items
This Item  Oura Ring 4 - Silver - Size 8 - Smart Ring - Size First with Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life | Recommendations  |  | ![Apple Watch Series 10 [GPS 46mm case] Smartwatch with Jet Black Aluminium Case with Black Sport Band - M/L. Fitness Tracker, ECG App, Always-On Retina Display, Water Resistant](https://m.media-amazon.com/images/I/31Cud2WnszL._AC_.jpg) | |
| Price | $349.00 | $1.00 | $299.00 | -16% $359.00 List: $429.00 |
| Delivery | Get it as soon as Thursday, Mar 27 | Get it as soon as Thursday, Mar 27 | Get it as soon as Thursday, Mar 27 | Get it as soon as Thursday, Mar 27 |
| Customer Ratings | ||||
| Sold By | Amazon.com | Ultrahuman US | RingConn Official Store | Amazon.com |
| size | 8 | Sizing Kit | 10 | 46mm case |
| connectivity tech | Bluetooth, USB | Bluetooth | Bluetooth | GPS |
| supported applications | Over 40 apps including Apple Health, Google Health Connect, Natural Cycles, Flo, Strava, & more | Sleep Monitor, Heart Rate Monitor, Activity Tracker, Custom Activity Tracker, Multisport Tracker | Multisport Tracker, Fitness Tracker | GPS |
| input interface | buttons | buttons | buttons | touch screen, buttons |
| wireless standard | bluetooth | bluetooth | bluetooth | 802 11 N, bluetooth |
| water resistance | water resistant | water resistant | water resistant | water resistant |
| case material | Titanium | Titanium | Titanium | Aluminum |
| gps navigation | No GPS | No GPSx8 | No GPS | Built-in GPS |
| water resistant depth | 328 feet | 100 meters | 100 meters | 50 meters |
| band color | Silver | black | — | Black Sport Band |
| band material | Titanium | titanium | Metal | — |
Worked Great To Find My Oura Ring Size! Discount Was Automatically Applied To The Ring.
I was hesitant to buy this because I worried it would be complicated to apply the discount from buying the sizing kit to the ring, but it was completely automatic (I bought both through Amazon so I can't say it is the same anywhere else, but on Amazon it was automatically applied to my checkout)! I didn't have to do anything.The sizing kit works great! It came in a box with several different sizes from very small to very large (size 4 - size 15). The size you are wearing is on each band so you won't forget which size you are wearing. The size number raises up, as part of the same material of the ring, meaning it cannot fade off, and you will always know which size each ring is.I found the most comfortable fit and wore it for a few days to make sure it was snug but not uncomfortable. The ideal fingers for the Oura ring are the pointer, middle, or ring finger. If you are prone to swelling you could size it to your ring or pointer and if you have swelling, move it to your middle finger.It is good to buy the kit to be sure, but I will say that the size I bought is also my ring size. I am still happy I bought the sizing kit and didn't risk having to do a return if it were different (and it can be), and it didn't cost me anything once I bought the ring.If you know you want the Oura ring, don't hesitate to buy the kit, as you will get your money back when you buy the ring, and it will save you the hassle of a return.My daughter ended up taking the smaller rings and decorating them, so we got some use out of the extra rings, as well!
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Top reviews from other countries
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Flavio LópezReviewed in Mexico on December 22, 2024
Es un excelente producto
Color: BlackSize: 9Verified Purchase -
Kindle CustomerReviewed in Mexico on December 11, 2024
Satisfecha con el producto
Color: Sizing KitSize: Sizing KitVerified Purchase -
PamelaReviewed in Mexico on November 20, 2024
Usado
Color: BlackSize: 7Verified Purchase
La caja venía abierta y el cargador también, se ve que ya se había usado.PamelaUsado
Reviewed in Mexico on November 20, 2024
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- ThorReviewed in the United Arab Emirates on January 25, 2025
good
Color: Gifting Sizing kitSize: Gifting Sizing KitVerified Purchase - NickReviewed in the United Kingdom on January 23, 2025
excellent
Color: Sizing KitSize: Sizing KitVerified Purchase
