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💍 Elevate your wellness game—wear the future on your finger.
The Oura Ring 4 is a cutting-edge smart ring made from durable titanium, designed for 24/7 wear with water resistance up to 100 meters. It tracks over 30 biometrics including sleep, heart rate, stress, and women’s health metrics using advanced Smart Sensing technology. With up to 8 days of battery life and a sizing kit to ensure the perfect fit, it offers seamless health insights without interrupting your lifestyle.






















| ASIN | B0D9WVBBZ4 |
| Additional Features | Advanced Health Tracking |
| Age Range Description | Adult |
| Band Color | Black |
| Band Material Type | Stainless Steel |
| Battery Average Life | 8 days |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Battery cell composition | Lithium Polymer |
| Best Sellers Rank | #947 in Electronics ( See Top 100 in Electronics ) #5 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 | Stainless Steel |
| Closure Type | Slip On |
| Color | Silver |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone, Tablet |
| Compatible Phone Models | All current iPhone models, all current Samsung Galaxy models, all current Android models |
| Connectivity Technology | Bluetooth |
| Connectivity technology | Bluetooth |
| Controller Type | Ring |
| Country of Origin | Estonia |
| Customer Reviews | 4.0 out of 5 stars 8,360 Reviews |
| Display Type | Analog |
| GPS | No GPS |
| GPS Geotagging Functionality | No GPS |
| Human Interface Input | Unknown |
| Item Dimensions | 24 x 24 x 8 millimeters |
| Item Dimensions D x W x H | 24D x 24W x 8H millimeters |
| Manufacturer | Oura |
| Metrics Measured | Heart Rate, Sleep Duration, Activity, Stress, Heart Health |
| Model Name | JZ90-54217-14 |
| Model Number | JZ90-54217-14 |
| Operating System | Proprietary/Custom |
| Operating system | Proprietary/Custom |
| Shape | Round |
| Special features | Advanced Health Tracking |
| Sport Type | Fitness |
| Style Name | Modern |
| Supported Application | Fitness Tracker |
| Supported Satellite Navigation System | GPS |
| Target Audience | Men |
| Warranty Description | 2 year manufacturer warranty |
| Warranty Type | Limited |
| Water Resistance Depth | 100 Meters |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IP54 |
| 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.
D**A
WOULD NOT RECOMMEND
After just 6 months, the battery lasts only 1 day. The ring frequently loses connection and fails to record data, especially during sleep. Very disappointing experience — would not recommend.
T**E
Pricey and good quality
No wonder it is priced very high but it delivers the quality justifying the price tag
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.
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
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.
E**A
Muy bien
B**S
A piece of jewelry with insightful data
It’s been one of my best decisions to buy this ring. Really insightful data and nice on the finger as well.
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**K
I love it!
I don't like wearing wrist watches, so having a smart ring is PERFECT for me! I love how durable it is, it's easy to clean, and the app that comes with it is GREAT! The tracking on this thing is flawless and it uses light sensors to track my vitals, so it doesn't even feel like a smart device, just a regular ring! It also charges very quickly, so if I'm using the bathroom or taking a shower at home, I just pop it on the charger for 10-15 minutes and it's good for a few days! I only do it daily just to establish a good routine, and I have forgotten before and let the battery get low, but still haven't had the power die on me yet! I can see it being an issue for lifting weights since it's coated in stainless still and a little bulky, but otherwise very comfortable for other forms of exercise! I can also see it being a problem because of the red and green light sensors at night, it might be disruptive to light sleepers in a dark room, but I just keep my hands under my blankets or pillows, and I sleep just fine! It doesn't light up all the time, just periodically throughout the night. If the tiny lights at night might bother you, you can probably put a thick sock or a glove over your hand at night to block the light. I'm personally not inconvenienced by it at night, and I like that I can't feel anything when it checks my vitals (heart rate, blood oxygen, temperature, just to name a few). I wound up subscribing to the app anually because I really liked how easy it was to set up and how thorough its analysis was for my overall health. UPDATE: Recently I noticed the ring was draining too fast between charges and I actually needed to charge it everyday! I reached out to customer service via the app, they asked a few questions, and shipped me another one immediately! It was refurbished, not brand new, but it works like new and I would never have known the difference if they didn't tell me! I keep the old one as a backup just in case since they said I don't need to send it back. I basically haven't stopped wearing the Oura ring since I put it on, and I've used it on long walks, swimming (fully submerged in water), and for general daily activities and it works great! I wash it with soap and water when I wash my hands and take it off to give it an.wxtra good wipe down before popping it on the charger or putting it back on!
A**S
Top, je suis vraiment contente de mon achat.
Top, je suis vraiment contente de mon achat🤩
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