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💍 Own your health, invisibly powerful.
The Oura Ring 4 is a sleek, titanium smart ring designed for professionals who demand precise, continuous health insights. It tracks over 50 metrics including sleep, activity, stress, and women’s health, powered by adaptive Smart Sensing technology. With up to 8 days of battery life, water resistance to 100 meters, and seamless integration with Android and iOS, it offers a discreet yet powerful wellness companion that fits effortlessly into your lifestyle.




















| ASIN | B0D9WW3YND |
| Additional Features | Activity Tracker, Cycle Tracking, Daily Workout Memory, Lightweight |
| Age Range Description | Adult |
| Band Color | Silver |
| Band Material Type | Titanium |
| Battery Average Life | 5 days |
| Battery Cell Composition | Lithium Polymer |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 80 minutes |
| Best Sellers Rank | #117 in Electronics ( See Top 100 in Electronics ) #2 in Smart Rings #886 in Exercise & Fitness Equipment |
| Brand | OURA |
| Built-In Media | Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide |
| Case Material Type | Titanium |
| Color | Silver |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone |
| Compatible Phone Models | Android Devices, iOS Devices |
| Connectivity Technology | Bluetooth |
| Customer Reviews | 4.0 out of 5 stars 8,505 Reviews |
| Display Type | No Display |
| EU Spare Part Availability Duration | 8 Days |
| GPS | GPS Via Smartphone |
| GPS Geotagging Functionality | GPS Via Smartphone |
| Human Interface Input | Buttons |
| Item Dimensions | 0.94 x 0.94 x 0.28 inches |
| Item Dimensions D x W x H | 0.28"D x 0.94"W x 0.28"H |
| Item Weight | 0.18 Kilograms |
| Manufacturer | Oura |
| Metrics Measured | Body Temperature, Menstrual Cycle, Sleep Duration, Stress |
| Model Name | JZ90-54217-06 |
| Model Number | JZ90-54217-06 |
| Operating System | [Proprietary Operating System] |
| Shape | Round |
| Special Feature | Activity Tracker, Cycle Tracking, Daily Workout Memory, Lightweight |
| Style Name | Metallic |
| Supported Application | Fitness Tracker, Sleep Monitor, Health Monitor, Apple Health, Google Health Connect, Natural Cycles, Flo, Strava |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adults |
| Unit Count | 1.0 Count |
| Warranty Description | 1 Year Manufacturer |
| Warranty Type | Standard/Full |
| Water Resistance Depth | 100 Meters |
| Water Resistance Level | Water Resistant |
| Wearable Computer Type | Smart Ring |
| Wireless Communication Standard | Bluetooth |
| Wireless Compability | Bluetooth |
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!
V**E
Worth it, especially with the customer support
I’ve been wearing my Oura Ring for a little over a year, and I use it every day. I originally bought it for the sleep tracking, but I’ve really come to appreciate the recovery and stress insights too. They help me recognize when I should prioritize rest or be more intentional about getting enough sleep. I also use it with Natural Cycles, which has worked well for me. After about a year, my battery started acting up and the ring wasn’t syncing consistently. I contacted Oura support through the app, and they quickly confirmed the issue and sent me a replacement ring. The whole process was surprisingly easy, and my new ring has been working perfectly. The ring itself has been a great purchase, but the customer service honestly made me feel even better about choosing Oura.
J**.
Amazing data collection… but a very steep price and short life.
Note: This is a long term review, after owning the ring for 10 months. It disappoints me to have to give this a 1 star review, because when the ring works, it works. It’s very convenient, accurate, un-intrusive to wear, and gives you a ton of valuable data, especially related to your cardiovascular system. But, out of the blue about 10 months into my ownership, battery life has cratered, and even when it doesn’t run fully discharged, it has randomly started disconnecting, meaning it’s not harvesting the data that I expect and want it to, and even worse, without full days of data, it won’t build any trends, meaning the limited data it does collect is useless. Reading online it seems I am not the only person experiencing this disappointment. Oura’s customer service is non existent. I have yet to figure out how to get in contact with a human there. All their customer service is routed through “Finn” their AI assistant. After trying everything that “Finn” has recommended numerous times, and getting nowhere, it would be an understatement to say I am frustrated. One of “Finn’s” suggestions is to fully wipe the ring and app from your phone and reinstall it, and if that doesn’t work, the implication from the system is that it will then elevate it to a customer service rep. The issue with that is when you do that, a hard reset and reinstall, the record with “Finn” also seems to go with it, so the system will never engage a human, it comes across almost like it’s intentional firewall in their service. I am coming up on my 1 year membership renewal. I am at the point where I need to decide if I need to make the $72 annual investment again. I would gladly spend that again, but I’m not really looking at a $72 investment. Given my current ring performance, this means buying another ring. Between the membership and a new ring, with taxes, shipping, etc, etc, etc that’s a near $500 investment; and since it only made it 10 months, that really means it’s effectively closer to $600 a year. Battery powered wearables have a limited life; I went into this understanding that, but, I don’t think that after less than a year of usage, going from ~5 days of battery life and collecting non-stop data to less than 24 hours of life with random crashes is in any way acceptable. Apple or Garmin or Google would have mass recalls or replacements on their hands if their wearables behaved like this. Good health is priceless. The ring helped me tremendously in my fitness journey. I have lost over 65 lbs with its help. At this point, however, given I have hit and am maintaining my weight goal, and from my current experience as well as based on what I read from others online, I refuse to spend any more money with Oura, simply because of their poor customer service and poor product life. My final thoughts: the ring makes your fitness journey significantly easier. Data is king when you’re committed to self improvement. For that, I give it 5 stars; but if you buy one, understand that it most likely will not make it to a year without some sort of collection or battery issue. You have to decide for yourself if $500 for 10-ish months of data is a fair price to pay.
Y**A
Accurate tracking and great quality smart ring
I’ve been using the Oura Ring 4 daily, and I’m very impressed with its design and functionality. It’s lightweight, comfortable to wear all day, and doesn’t feel bulky at all. The health tracking features are very detailed, especially sleep and activity insights, which have helped me better understand my daily habits. The app is easy to use and provides clear information. The finish in gold looks elegant and high quality. One important thing is to make sure to measure your size correctly before purchasing, as the fit is very important for comfort and accuracy. Overall, I’m very satisfied with this smart ring and would definitely recommend it for anyone interested in health tracking in a minimal and stylish form.
G**.
Best investment I made in years for my well-being!
MI have only been using the Oura Ring 4 for about four months, and it has completely changed the way I understand my body. As a woman, the cycle tracking alone has been incredibly valuable. Being able to see how different phases of my cycle affect my sleep, recovery, stress levels, energy, and overall readiness has helped me make much better decisions about work, exercise, and self-care. Instead of wondering why I feel different from one week to the next, I finally have data that helps me understand what is happening and adjust accordingly. The sleep tracking has been especially eye-opening. I thought I had a decent understanding of my sleep habits, but Oura showed me patterns I would never have noticed on my own. The stress tracking has also helped me become much more aware of when I need to slow down, recover, or prioritize rest before I burn out. I previously used RingConn, and in my experience Oura is on a completely different level. The insights are more meaningful, the app is more polished, and the overall experience feels much more focused on helping you understand and improve your health rather than simply collecting data. I know some people hesitate because of the subscription, but honestly, I think it is absolutely worth it. The value comes from the quality of the insights and the way the information is presented. It has helped me make tangible changes to my daily habits and overall well-being. Only four months in, and I already recommend Oura to all of my friends. It is one of the few health and wellness purchases that has genuinely exceeded my expectations. If you are looking for a wearable that helps you better understand your sleep, stress, recovery, and cycle health, I cannot recommend the Oura Ring 4 highly enough.
P**R
Excellent device, poor battery longevity
I purchased a rind 1.5 years ago and have used it every day since. Here is what I love about it: 1) Great insight into your basic health metrics and the app is easy to understand and provides helpful reporting. 2) looks great and is much more comfortable to sleep with than a watch. 3) allows me to wear an analog watch and still track movement and steps, as well as all health functions. 4) great battery life for the fist year, 5) great build quality. I train with weights daily and regularly hike, backpack and even took it for a 3 week through hike of the VT Long Trail with no issues or damage to the ring. Neutral: 1) size is a bit much and can feel a bit big on my finger, I don't wear jewelry so that could be why, 2) I have to take it off to do pull-ups, deadlifts or anything where the ring compresses against the bar. Not just because the ring could get damaged but also because the pressure digs the ring into my finger and it can be painful or get in the way of my grip. 3) charging is a bit slow 4) fitness tracking even with my iphone connected for tracking my location and movement is fairly poor compared to my garmin GPS watch. This is probably to be expected but for those of you thinking about using this as your sole fitness tracking system I would think twice. Milage is consistently off (lower) then using my Garmin Enduro. Negatives: 1) Biggest issue: The battery life slowly dies. When I first got the ring I could go 5-6 days between charges, now at 1.5 years I'm charging it every other day. At $400 for the ring I would expect better battery longevity. 2) I didn't find much use for Symptom Radar. It tended to make me paranoid rather than providing useful data. Not once when it provided an alert did I get sick and it gave me a ton of false positives like when I came home after an overnight flight, had a few too many drinks, ate too much before bed, etc. I eventually turned it off and haven't missed it at all. Overall I still love my Oura ring and it would amazingly with my iPhone. After a year and a half of daily use (it only comes off to charge) the ring still looks great.
B**W
A Wellness Game Changer That Helps Me Understand My Body
The Oura Ring 4 has truly been a game changer for me! As someone living with chronic illnesses, being able to better understand my body, track my patterns, and recognize changes has been incredibly valuable. This ring gives me insight into things like sleep, recovery, readiness, activity, and so much more, helping me become more in tune with what my body needs. I was a little hesitant about the price and the monthly subscription at first, but after using it, I can confidently say it’s worth the investment. The amount of information and features it provides makes it feel like a personal wellness tool right on my finger. I love that it helps me notice trends, make better decisions for my health, and understand when I may need to slow down or prioritize rest. If you’re someone who wants to be more connected with your body and your overall wellness, the Oura Ring 4 is definitely worth considering. This has become an essential part of my daily routine, and I couldn’t recommend it more!
C**D
Technology that is Functional and Elegant
Comestically, I like the brushed silver - it is stunning. I've had the black, black matte and the gold. I like the brushed silver by far - not as shiny as the regular silver, and the texture is classy, more masculine. Functionally, Oura it does as advertised and allows me to take my other devices off to track sleep, you don't even notice it's on your finger. The app provides a ton of information daily as well as seasonal and annual reports so you can see how you are tracking. Only pitfall is it may pick up washing dishes, taking a shower or vacuuming as an activity due to the consistent motion. You can delete if desired. Battery life is about 4-5 days with no charge. I choose to recharge when I'm in shower as I don't need metrics for that, so I never run out of battery. Worth the investment.
E**A
Muy bien
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🤩
☆**☆
休むのが苦手な人に。体調の変化を事前に教えてくれる魔法の指輪
睡眠の質と日々の健康状態を把握したくて購入。 現在使い始めて5ヶ月目。 普段はPixel Watch 4をつけているけど、両方使っても全く邪魔にならない。 つけている感覚があまりないから、寝る時も気にならないのがいいところ。 事前にサイジングキットで指の太さを測ってから買ったので、フィット感はばっちり。 キットの購入代金分がしっかり割引になったのも助かった。 最初のうちはただの記録だけど、30日くらい使い続けると自分のサイクルが見えてくる。 データが蓄積されて、日々の体感とストレス測定のグラフがぴったり合うようになる。 5ヶ月間使ってみて、とくによかったのはこんなところ。 ・時計と併用しても指や手首が快適 ・30日目あたりから自分の疲れのピークがわかる ・ストレス状態の測定精度がかなり高い ・体調不良の兆候を事前に教えてくれる 一番驚いたのは体調不良の予測。 実際に体調を崩し始めたタイミングで、アプリがしっかり不調を検知していた。 ついつい無理をして、自分から休みをとれない性格の人におすすめ。 客観的なデータで「そろそろ休んだほうがいい」とストップをかけてもらえる。 今ではすっかり手放せない、健康管理のお守りになっている。
U**A
Najlepszy
Najlepszy tracker samopoczucia i dobrostanu
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