

💍 Elevate your wellness game—wear the future on your finger.
The Oura Ring 4 is a cutting-edge smart ring designed for professionals who demand precision and style. Featuring over 30 biometric sensors powered by Smart Sensing technology, it delivers continuous, accurate tracking of sleep, heart rate, activity, and stress. Its all-titanium build ensures durability and comfort for 24/7 wear, while an impressive 8-day battery life frees you from daily charging. The included sizing kit guarantees a perfect fit, and the Oura membership offers personalized health insights, making it the ultimate wearable for holistic wellness.











| ASIN | B0D9WT1S2T |
| Age Range | Adult |
| Batteries | 1 Lithium Polymer batteries required. (included) |
| Batteries Included? | Yes |
| Best Sellers Rank | #117 in Electronics ( See Top 100 in Electronics ) #1 in Wearable Tech Rings |
| Brand | OURA |
| Color | Silver |
| Compatible with | Smartphone, Tablet |
| Customer Reviews | 4.0 4.0 out of 5 stars (5,075) |
| Date First Available | 11 April 2025 |
| Display Type | No Display |
| Features | Heart Rate Monitor, Activity Tracker |
| Included Components | Information Booklet, Oura Ring 4, Oura Ring 4 Charger, Quick Start Guide, USB-C Cable |
| Item model number | JZ90-54217-10 |
| Manufacturer | Oura |
| Meter | Combination of Accelerometers, Optical Heart Rate Sensors, and Other Sensors |
| Number of Items | 1 |
| Product Dimensions | 2.7 x 2.7 x 0.7 cm; 180 g |
| Shape | Ring |
| Size | 10 |
| Style | Modern |
R**U
dying battery render the ring useless, free replacement seamlessly provided
Product works as expected and is hepful. After 7 months of usage battery is dying, resisiting less than one day after full charged. I contacted the seller, and free replacement arrived in couple of days, no need to return the mafunctioning one. As such, a one star reviewe turned into a 5 stars.
T**E
Pricey and good quality
No wonder it is priced very high but it delivers the quality justifying the price tag
K**S
Useless
Useless : battery fails after 1 month : customer service does not exist : do not buy
K**O
Life changing if you’re willing to put the work in
I’ve had it for a month now and I can say it really keeps me on track not necessarily health and fitness but more habits and trends. I think everyone can benefit from it. It came neatly packaged and sealed 100% new and after wearing every day I definitely have a lot of small scratches (and I take it off for showering doing dishes etc) but not visible to the normal eye
F**I
Outstanding technology
The ring works very well and it is helping to monitor my health, sleep and activity. Strongly suggested. I got my ring the same day I ordered, great service from Amazon
I**Y
Good functional ring. Maybe the best on the market
Color has changed in few months. A lot of scratches. But the ring in overall is very good and functional.
L**G
the best investment I've ever made
I love it !! The Oura Ring 4 is a powerful tool for those looking to optimize their health mindfully and without the digital noise of other devices. It’s ideal for anyone who values sleep quality, physical recovery, and overall well-being. I highly recommend it if you’re committed to improving your lifestyle in a smart and sustainable way.
Y**A
Tarnished very quickly, choose carefully
The Oura Ring colour has tarnished within 4 weeks of wearing, it now looks copper (not rose gold), and doesn't match my jewellery. I'd ideally like to exchange but the return window is really short on Amazon and there is no option to swap now even after a short period, wouldn't recommend as the colours tarnish very quickly!
S**E
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.
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.
U**A
Najlepszy tracker samopoczucia i dobrostanu
S**O
Very comfortable to wear, lightweight and almost unnoticeable during the day and at night. Clean, minimal design that looks like a regular ring, not a gadget. Sleep, recovery and readiness insights are clear and actually useful. A great choice if you want health tracking without a watch on your wrist.
T**A
Increíble gran compra …
Trustpilot
5 days ago
2 weeks ago