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💍 Elevate your health game with the ring that works as hard as you do.
The OURA Ring 4 in Silver is a cutting-edge smart ring designed for professionals seeking discreet, continuous health monitoring. Featuring up to 8 days of battery life, titanium durability, and seamless Bluetooth app integration, it tracks heart rate, sleep, and activity with precision. Water-resistant and compatible with over 40 health apps, it offers a sleek, data-driven edge to optimize your wellness routine.











| ASIN | B0D9WVSZ56 |
| Age Range Description | Adult |
| Band Colour | Silver |
| Band Material Type | Titanium |
| Battery Average Life | 8 days |
| Battery Capacity | 26 Milliamp Hours |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Best Sellers Rank | 523 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 | App Integration, Bluetooth |
| Compatible Devices | Smartphone |
| Compatible Phone Models | iOS, Android |
| Connectivity Technology | Bluetooth, USB |
| Controller Type | Remote control via smartphone |
| Country of Origin | Estonia |
| Customer Reviews | 4.2 4.2 out of 5 stars (7,033) |
| Display Type | No Display |
| GPS Geotagging Functionality | No GPS |
| Human Interface Input | Buttons |
| Item Dimensions | 25 x 25 x 7 millimetres |
| Item Dimensions D x W x H | 25D x 25W x 7H millimetres |
| Item Weight | 5.2 Grams |
| Manufacturer | Oura |
| Memory Storage Capacity | 5 MB |
| Metrics Measured | optical, accelerometer |
| Model Name | Oura Ring 4 - Silver - Size 8 |
| Model Number | JZ90-54217-08 |
| Operating System | Android |
| Product Features | Heart Rate Monitor, Activity Tracker |
| Shape | Ring |
| Sport Type | Multi-Sports |
| Style Name | Modern |
| Supported Application | Over 40 apps including Apple Health, Google Health Connect, Natural Cycles, Flo, Strava, & more |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adult |
| Unit Count | 1.0 count |
| Warranty Type | Lifetime |
| Water Resistance Depth | 1 Metres |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IP68 |
| Wearable Computer Type | Smart Ring |
| Wireless Compability | Bluetooth |
S**Y
A great alternative to a smart-watch
I was keen to utilise technology to help with my fitness, but love mechanical watches so a smart-watch wasn't an option. Came across this and after some research I gave it a punt. Very happy customer, the ring is a doddle to set up and works a treat. Battery life is a snadge less than advertised but not enough to make me dock points. It's a shame about the subscription, as I think the ring is costly enough that it's something of a liberty to charge for ongoing use, they could lose things like the guided meditation etc and give a free option, or bake in more value-add to the app. Enough moaning though, what it does it does really well, giving me insights into my sleep patterns and broader health. I am happy I bought it and check the app at least daily months after buying.
L**N
Great item, very efficient at tracking
I love this ring, it does everything and more that you could ever want from a fitness tracker. It also works really well alongside your Apple Watch. I would highly recommend and it was sent to me within 24 hours.
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.
S**L
Good product if its in the box when delivered.
My wife and I bought two rings. Mine arrived complete, but my wife's was missing the ring. So I ordered another one, thinking it was just a mistake. Her second package arrived the next day with no ring in it AGAIN.
S**E
⭐️⭐️⭐️⭐️⭐️ Game-Changer for Chronic Illness & Neurodivergent Wellness Tracking
I discovered the Oura Ring 4 through the Clue period tracking app, and it’s been a total game-changer. I live with Chronic Fatigue Syndrome, Fibromyalgia, and AuDHD, and I was looking for something that could help me track sleep, stress, body temperature, and recovery. Oura delivers on all fronts—and then some. What I love most is the accuracy and depth of insight. It doesn’t just give you only the minimal data, like Deep, Light and REM sleep, but also things like how long it takes you to get to sleep (latency) and how restless you are —it then translates this into genuinely helpful feedback, like sleep and recovery scores, body temperature trends, and guided breathing for stress. The daily readiness score helps me pace myself, which is essential when managing fatigue and sensory overwhelm. The breathing and mindfulness sessions have been a great tool during flare-ups or overstimulation. A few things to note: There is a monthly app subscription, but it’s reasonably priced for what you get. I also got a month free when I signed up. The app is intuitive and easy to navigate, though some people might need a bit of time to explore all its features—there are a lot, and they’re all useful. It takes about 90 days for Oura to fully calibrate and understand your individual baseline, so the insights get better over time. Buying the sizing kit first is a MUST—you’ll want a good fit for accuracy and comfort. Tagging activities and meals is super simple (if you remember to do it). The Rest Mode is a thoughtful feature for days when you’re sick, in pain, or recovering, though I do wish stress tracking stayed active during this mode. Battery life is solid, syncing is quick, and the ring itself is lightweight and comfortable—even with sensory sensitivities. It also integrates beautifully with Clue for cycle tracking, which adds another layer of helpful data for me. If you're managing chronic illness, neurodivergence, or just want a deeper, more holistic view of your health, I can’t recommend the Oura Ring 4 enough. It’s not just about fitness—it’s about understanding your body, honoring your limits, and supporting your wellbeing.
A**R
Nice ring
Works, decent battery life, comfortable and the app gives me useful stats and hints. I wish the stats did not need a subscription otherwise 5 stars
J**S
Tracker
This is great at tracking sleep and stress. I personally believe the steps/ calories burnt are wrong but nothing is 100% accurate that way. I have had this ring since December, I do use ring covers to protect from scratches. The charge did last over a week each time but now it needs charging every 4 days. The oura app is about 5pound per month and the natural cycles is about 12pounds per month but this has helped me a lot, I'm very happy with this
M**.
Ich suchte eine Alternative zur Sportuhr / Smartwatch und wurde fündig. Der Ring macht nicht nur optisch etwas her, sondern liefert einem auch Daten über die eigene Gesundheit. Er ist ein guter Allrounder und macht einiges sichtbar, was man im Alltag doch gerne übergeht. Mit Hilfe des Ringes achte ich nun mehr auf Bewegung und Ruhezeiten. Die Auswertungen sind zudem hochinteressant. Ich kann den Ring jedem empfehlen der auf der Suche nach einem Gerät ist, welches den Fokus auf die Beobachtung der Gesundheit legt. Sollte der Schwerpunkt eher auf dem Sport liegen, würde ich zu einer Smartwatch tendieren.
E**A
D**A
Delivery took longer than expected, but i am happy with the ring. It does exactly what they advertise. Its a nice to have.
☆**☆
睡眠の質と日々の健康状態を把握したくて購入。 現在使い始めて5ヶ月目。 普段はPixel Watch 4をつけているけど、両方使っても全く邪魔にならない。 つけている感覚があまりないから、寝る時も気にならないのがいいところ。 事前にサイジングキットで指の太さを測ってから買ったので、フィット感はばっちり。 キットの購入代金分がしっかり割引になったのも助かった。 最初のうちはただの記録だけど、30日くらい使い続けると自分のサイクルが見えてくる。 データが蓄積されて、日々の体感とストレス測定のグラフがぴったり合うようになる。 5ヶ月間使ってみて、とくによかったのはこんなところ。 ・時計と併用しても指や手首が快適 ・30日目あたりから自分の疲れのピークがわかる ・ストレス状態の測定精度がかなり高い ・体調不良の兆候を事前に教えてくれる 一番驚いたのは体調不良の予測。 実際に体調を崩し始めたタイミングで、アプリがしっかり不調を検知していた。 ついつい無理をして、自分から休みをとれない性格の人におすすめ。 客観的なデータで「そろそろ休んだほうがいい」とストップをかけてもらえる。 今ではすっかり手放せない、健康管理のお守りになっている。
U**A
Najlepszy tracker samopoczucia i dobrostanu
ترست بايلوت
منذ أسبوعين
منذ شهرين