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💍 Elevate your wellness game with the smartest ring you’ll ever wear.
The Oura Ring 4 is a sleek, titanium smart ring designed for continuous 24/7 health tracking. It monitors over 30 biometric signals including sleep quality, heart rate, and stress levels with advanced Smart Sensing technology. Featuring up to 8 days of battery life and water resistance up to 100 meters, it combines durability with comfort. The purchase includes a sizing kit for a perfect fit and a free first month of Oura Membership for personalized health insights.
| ASIN | B0D9WT1S2T |
| Additional Features | Heart Rate Monitor, Activity Tracker |
| Age Range Description | Adult |
| Band Color | Silver |
| Band Material Type | Silver |
| Battery Average Life | 8 days |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Best Sellers Rank | #74 in Electronics ( See Top 100 in Electronics ) #1 in Wearable Tech Rings |
| 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 | Slip On |
| Color | Silver |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone, Tablet |
| Compatible Phone Models | [Broad range of smartphone models] |
| Connectivity Technology | Bluetooth |
| Controller Type | Ring |
| Country of Origin | Estonia |
| Customer Reviews | 4.0 4.0 out of 5 stars (6,287) |
| Display Type | No Display |
| GPS Geotagging Functionality | No GPS |
| Human Interface Input | Unknown |
| Item Dimensions | 27 x 27 x 7 millimeters |
| Item Dimensions D x W x H | 27D x 27W x 7H millimeters |
| Item Weight | 180 Grams |
| Manufacturer | Oura |
| Metrics Measured | Combination of Accelerometers, Optical Heart Rate Sensors, and Other Sensors |
| Model Name | Oura Ring 4 |
| Model Number | JZ90-54217-10 |
| Operating System | iOS, Android |
| RAM Memory Installed | 16 MB |
| Shape | Round |
| Style Name | Modern |
| Supported Application | Third-party applications |
| Supported Satellite Navigation System | GPS |
| Target Audience | Adult |
| Warranty Description | manufacturer warranty |
| Warranty Type | Limited |
| Water Resistance Depth | 100 Meters |
| Water Resistance Level | Water Resistant |
| Wearable Computer Type | Smart Ring |
| Wireless Compability | 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
A**Y
Battery issue
After 5 months of usage battery capacity decreased to ~ 1.5 day. Sometimes during the night ring hangs and does not provide sleep metrics at all. This issue also seems to be related to battery malfunction. Latest firmware and soft resets do not help.
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
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.
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.
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
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!
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.
T**K
前モデルのバッテリが1日しか持たなくなったため、第4世代モデルに移行しました。機能は前モデルとほぼ同じなので、アプリサイドの更なるアップグレードを期待したいと思います。とはいえ、安定のモデルであることは間違いないです。
U**A
Najlepszy tracker samopoczucia i dobrostanu
C**L
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
3 weeks ago
3 weeks ago