💍 Own your wellness journey with the stealthy, smart ring that never quits.
The Oura Ring 4 is a minimalist, titanium smart ring designed for 24/7 wear, offering advanced biometric tracking across 30+ health metrics including sleep, heart rate, and stress. With up to 8 days of battery life, water resistance, and seamless Bluetooth connectivity to iOS and Android devices, it delivers continuous, accurate health insights in a sleek, durable form factor. The included sizing kit ensures a perfect fit, while the Oura membership unlocks personalized wellness guidance.
| ASIN | B0D9WVKWXN |
| Additional Features | smart detection |
| Age Range Description | Adult |
| Band Color | Stealth |
| Band Material Type | Titanium |
| Battery Average Life | 8 days |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Battery cell composition | Lithium Polymer |
| Best Sellers Rank | #43 in Sporting Goods ( See Top 100 in Sporting Goods ) #1 in Wearable Tech Rings #2 in Activity Trackers |
| Brand | OURA |
| Built-In Media | Information Booklet, Oura Ring 4, Oura Ring 4 Charger, Quick Start Guide, USB-C Cable |
| Case Material Type | Titanium |
| Closure Type | No Closure |
| Color | Stealth |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone |
| Compatible Phone Models | all current iPhone models, all current Android models |
| Connectivity Technology | Bluetooth |
| Connectivity technology | Bluetooth |
| Country of Origin | Estonia |
| Customer Reviews | 4.0 out of 5 stars 5,035 Reviews |
| Display Type | Analog |
| GPS | No GPS |
| GPS Geotagging Functionality | No GPS |
| Human Interface Input | Touchscreen |
| Item Dimensions | 24 x 24 x 8 millimeters |
| Item Dimensions D x W x H | 24D x 24W x 8H millimeters |
| Item height | 0.8 centimeters |
| Manufacturer | Oura |
| Metrics Measured | Heart Rate Monitor, Sleep Monitor |
| Model Name | Oura Ring 4 - Stealth - Size 10 |
| Model Number | JZ90-54218-10 |
| Operating System | i_os, android |
| Operating system | i_os, android |
| Shape | Round |
| Special features | smart detection |
| Style Name | Minimalist |
| Supported Application | Application Oura |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adults |
| Warranty Description | 2 year manufacturer warranty |
| Warranty Type | Limited |
| Water Resistance Level | Water Resistant |
| Wearable Computer Type | Smart Ring |
| Wireless Compability | Bluetooth |
| Wireless communication standard | Bluetooth |
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!
Trustpilot
2 weeks ago
3 weeks ago
