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💍 Elevate your wellness game with the ring that knows you best
The Oura Ring 4 in Silver is a cutting-edge smart ring crafted from titanium, designed for professionals who demand precision health tracking and elegant style. It offers advanced monitoring of heart rate, sleep quality, and activity, all powered by an 8-day battery and fast USB-C charging. With Bluetooth connectivity and a sleek, water-resistant design, it seamlessly integrates into your lifestyle, delivering deep wellness insights right at your fingertips.






















| ASIN | B0D9WWB3WX |
| Age Range Description | Adult |
| Band Colour | Silver |
| Band Material Type | Titanium |
| Battery Average Life | 8 days |
| Battery Capacity | 192 Hours |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Battery capacity | 192 Hours |
| Battery cell composition | Lithium Polymer |
| Best Sellers Rank | 424 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 2 in Wearable Tech Rings |
| Box Contents | Information Booklet, Oura Ring 4, Oura Ring 4 Charger, Quick Start Guide, USB-C Cable |
| Brand Name | OURA |
| Case Material Type | Titanium |
| Closure Type | Slip On |
| Colour | Silver |
| Communication Feature | Bluetooth |
| Compatible Devices | PC, Smartphone, Tablet |
| Compatible Phone Models | All current smartphone models with iOS and Android operating systems |
| Connectivity Technology | Bluetooth |
| Connectivity technology | Bluetooth |
| Controller Type | ring |
| Country of Origin | Estonia |
| Customer Reviews | 4.3 out of 5 stars 8,663 Reviews |
| Display Type | No Display |
| EU Spare Part Availability Duration | 8 Days |
| GPS Geotagging Functionality | No GPS |
| Human Interface Input | Buttons |
| Item Dimensions | 26 x 26 x 7 millimetres |
| Item Dimensions D x W x H | 26D x 26W x 7H millimetres |
| Item Weight | 0.18 Kilograms |
| Manufacturer | Oura |
| Metrics Measured | Heart Rate, Sleep Duration, Activity, Stress |
| Model Name | Oura Ring 4 |
| Model Number | JZ90-54217-09 |
| Operating System | Proprietary OS |
| Operating system | Proprietary OS |
| Product Features | Heart Rate Monitor, Activity Tracker |
| Product Warranty | 3 year manufacturer warranty |
| RAM Memory Installed | 512 KB |
| Shape | Round |
| Special feature | Heart Rate Monitor, Activity Tracker |
| Sport Type | Fitness, Swimming |
| Style Name | Modern |
| Supported Application | Apple Health |
| Target Audience | Unisex Adult |
| Warranty Type | Lifetime |
| Water Resistance Depth | 328 Feet |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IP68 |
| Wearable Computer Type | Smart Ring |
| Wireless Compability | Bluetooth |
| Wireless communication standard | Bluetooth |
D**.
Great insight on an easy to use app. I love it
I LOVE my Oura. The app is easy to use and the more you wear it, the more insight you get. Great for monitoring exercise and learning when you need to rest. It’s not cheap, but it works so well it’s decent value. Batter lasts a long time. Just wish I’d waited and got the new smaller version as it’s quite large.
H**.
Best bit of health kit I’ve bought!
Completely addictive, so interesting in terms of the info - I’m debating moving away from my Apple Watch as the battery on this is so much better - I always charge my watch overnight but the sleep info on the Oura is great, amazing accuracy on the patterns! The battery life i would say isn’t quite as long as described but still a few days so good enough! Super easy to set up and use, debating the travel charge case but at the moment not sure it’s needed as the charger is just USB C. Definitely worth ordering the fitting measure, I wouldn’t have had a clue but annoying when you decide you want to go for it as adds a few days before you can purchase. Once bought though a perfect fit. I bought the brushed silver and have had quite a few compliments, it’s a really nice, non flashy piece that blends well with other items of jewellery. Expensive but so far I would say worth it :)
A**R
Expensive but good value!
Really impressed, it's been tracking my sleep and helping manage my diet and exercise. It's comfortable and pretty stylish. The app is easy to use and doesn't bother me all the time with ads or useless notifications. It's very expensive and having to pay a subscription isn't the best but I think it's pretty good value for the technology in it. It was really easy to set up and hasn't had any connection drop outs or other issues. I'm a little concerned that the next ring will not be compatible with my current charger or case if I decide to get one. I hope it will be but the 3rd gen isn't compatible with 4th so that's something to know if you're buying in a few years and the 5th gen is due out. Hopefully I'm wrong and backwards and forwards compatibility won't be a problem. I like the idea of being able to give friends a discount link right from the app but it would be better if I got a month of my subscription free if they buy. I much prefer this form factor to a watch but you do give up easy heart rate monitoring so maybe a widget that can be pinned to a phone screen or even a small screen on the ring would be something cool to add in the future. Blood pressure monitoring would also really be a cool thing to add but that might not be possible. One other thing to keep in mind if you are buying is it really needs a lot of data to get the most out of it so for the first couple of weeks to a month it won't give you all the readings. In conclusion, I love it, I'm really pleased with the fit and the colour I chose. The app is great and I wish I'd had one years ago. Very happy customer.
L**A
Please don’t waste your money!
Don’t waste your money!! I have had mine 4 months and the battery is draining fast!! A very expensive piece of crap in my opinion. You also have to pay a subscription which is ridiculous!! If you want to track your health get a watch. I got conned into getting this to take my temperature, the way it is going it won’t even work in a months time and I’ll have to fork out more money! You also have to buy ring covers every month because it gets scratched very easily and it just looks like an eyesore the covers don’t last very long either!
B**N
Love my Oura
Love my Oura! Wear it as a wedding band and never take it off 😀 Battery life is over 5 days and is robust and well built. Mine is a size 10 and I never notice I’m wearing it. The app is great and auto activity tracking is spot on.
I**S
REVIEW OF OURAL RING 4
IT IS GOOD, BUT NOT AS THIN AND CONFORTABLE AS OURA RING 5. THE SUBSCRIPTION IS RATHER ANNOYING, PARTICULARLY IF YOU CONSIDER HOW MUCH YOU PAYED FOR THE RING. AT LEAST THE CHRGER IS INCLUDED IN THE PACKAGE, IN CONTRAST WITH THE OURA RING 5. IT IS THE BEST RING TO TRACK YOUR SLEEP, BUT NOT ACCURATE FOR WORKSHOPS AND IT IS DIFFICULT TO USE IT WHEN YOU LIFT WEIGHTS...SO IT IS COMFORT WHEN YOU SLEEP. BATTERY LIFE IS GOOD. BEST OF ALL IS THE APP....ALTHOUGH I AM EXPECTING TO BECOME BETTER SINCE YOU PAY FOR IT AND THE APP OF ALL THE OTHER RINGS IS FREE...
C**Y
Looks Great, Rugged & Works Well. 6-7 Day battery life.
This is the second Oura Ring I have owned, this one had a great discount in the Amazon sale so it was worth upgrading from the 3 to the 4. It looks great in Black Stealth and can handle knocks and abuse of a manual labour job. I’ve had it 6 weeks now and worn it every day to work and I still don’t see any scratches dents or marks on it. Battery life is also exceptional at 6 days, maybe 7 at a push. But it doesn’t take long to recharge either. The App that comes with it is very good as well and covers the same matrix that an iOS or Android watch does including sleep, heart rate, oxygen saturation, steps, Activity and even stress. It gives a detailed breakdown of each and depending on how interested you are you can breakdown by day, week, month or year. It can also provide weekly, monthly and yearly reports on All matrix monitored. So if you’re way over your step goal for example the app will suggest setting a higher one. It does the same with sleep etc. There is also a Rest mode if you pick up an injury or illness. I was very surprised when I had the flu and the App notified me that something was going on with my body and suggested rest mode. So if you’re a Sporty individual or just someone like me who likes to keep tabs on my health I would highly recommend this ring.
T**P
A great tool which does exactly what it says.
The app is brilliant. It takes a while to get to know you, so don't expect instant insights, but as it builds a picture it is really good at telling you what's going on. I am using it to track my food etc as well, so not exclusively related to what's happening on the ring. On the ring specifically? Well, it is chunkier than a ring you'd buy as jewellery. That's ok and it's not ridiculous, but you have to get used to it. I do find I take it off and put it on more, or change fingers, as my hand needs a rest. The colour... Despite the name stealth, does stand out. If you want something more subtle then brushed or silver is probably better, as it's more like typical jewellery. That being said, I've gotten used to it. Sizing - definitely get the sizing kit and wear not for a few mins but for a day or two to understand how your fingers change size. Battery life is good. I reckon 8 charge it once every 4 otlr 5 days so far. I understand turning off blood oxygen measuring is the way to really eek out more battery life. You can also use airplane mode to reduce how often it speaks to your phone. But yeah, no regrets, it's a great tool and honestly, easier to live with than a smart watch.
B**S
A piece of jewelry with insightful data
It’s been one of my best decisions to buy this ring. Really insightful data and nice on the finger as well.
D**A
Nice
Delivery took longer than expected, but i am happy with the ring. It does exactly what they advertise. Its a nice to have.
A**S
Top, je suis vraiment contente de mon achat.
Top, je suis vraiment contente de mon achat🤩
U**A
Najlepszy
Najlepszy tracker samopoczucia i dobrostanu
C**L
Great insights on sleep
I’ve only used it for a week so I haven’t gotten the full insights it can offer, but the Oura ring 4 has been great so far. I bought it primarily to track my sleep, and it’s fascinating to track the quality of my sleep each night.
Trustpilot
2 months ago
2 weeks ago