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💍 Own your health, style, and time — all in one sleek ring.
The Oura Ring 4 is a cutting-edge smart ring crafted from durable titanium, offering up to 8 days of battery life and water resistance up to 100 meters. It tracks over 30 biometric signals including heart rate, sleep, stress, and activity with advanced Smart Sensing technology. Designed for continuous 24/7 wear, it comes with a sizing kit for a perfect fit and integrates seamlessly with popular health apps. The purchase includes a free first month of Oura membership, enhancing your wellness journey with personalized insights.
| ASIN | B0D9WVKXLK |
| Additional Features | Heart Rate Monitor, Activity Tracker |
| Age Range Description | Adult |
| Band Color | gold |
| Band Material Type | Titanium |
| Battery Average Life | 8 days |
| Battery Capacity | 8 |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Battery capacity | 8 |
| Battery cell composition | Lithium Polymer |
| Best Sellers Rank | #404 in Electronics ( See Top 100 in Electronics ) #2 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 | Gold |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone, Tablet |
| Compatible Phone Models | Android, iOS |
| Connectivity Technology | Bluetooth |
| Connectivity technology | Bluetooth |
| Controller Type | Ring |
| Country of Origin | Estonia |
| Customer Reviews | 4.0 out of 5 stars 8,792 Reviews |
| Display Type | No Display |
| GPS Geotagging Functionality | No GPS |
| Global Trade Identification Number | 06430060153288 |
| Human Interface Input | Buttons |
| Item Dimensions | 22 x 22 x 7 millimeters |
| Item Dimensions D x W x H | 22D x 22W x 7H millimeters |
| Item Weight | 0.18 Kilograms |
| Manufacturer | Oura |
| Metrics Measured | Heart Rate, Stress, Sleep Duration, Activity |
| Model Name | JZ90 |
| Model Number | JZ90-54216-08 |
| Operating System | Android |
| Operating system | Android |
| Shape | Ring |
| Special features | Heart Rate Monitor, Activity Tracker |
| Style Name | Modern |
| Supported Application | Phone |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adult |
| Warranty Description | 2 year manufacturer warranty |
| Warranty Type | Limited |
| Water Resistance Depth | 100 Meters |
| Water Resistance Level | Water Resistant |
| Wearable Computer Type | Smart Ring |
| Wireless Compability | Bluetooth |
| Wireless communication standard | Bluetooth |
A**L
Very good ring, apps, afterservice
I bought in Apr-25 (with Salama 1yr extra warranty). I have been using this ring a everyday and never give me issues. However, these last couple of day, it started to lose connection when i am outside, and battery seems to be very quick charge. Contacted the support thru app, and got replacement in mere minutes. Very good after service. Ring itself is very good at tracking sleep, stress level, and help me plan my day. The heart rate is same as my sport band type hrm. The app is very good, able to sync with strava, google health. If any suggestion i would make, is for Oura to allow the notes for daily supplements to carry over. I have supplements around same time, everyday. I would recommend the ring for the after service, apps - and that it comes in a ring package, so i can wear my watches without feeling dumb :)
A**A
New Ring
My Oura Ring arrived in perfect condition, the box was closed and the ring is new, was very easy to create and account in the app, I got one month free subscription as advertised, I was so worry about the reviews and at the end everything works great. Love the ring colour.
S**T
Product Warranty does not work
Ring stopped functioning within 10 months and the company is unable to fulfill the promised warranty of replacement stating it’s out of stock as they are phasing it out and not sure when will they get back the stock for my size. Once the new model hit the market, my ring started glitching and a reputable company like Oura is not fulfilling its warranty in real world for me.
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
H**A
Good but where is my cleaning pad
Got it from Amazon prime sale. Dwliveeu within 3 hrs. The ring was packed well. Happy with it but wondering where could I get my cleaning pad as it wasn't sent to me
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!
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.
T**A
Padrísimo…
Increíble gran compra …
Trustpilot
3 days ago
2 days ago