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💍 Own your health journey with stealthy precision.
The Oura Ring 4 Smart Ring in Stealth size 13 is a cutting-edge biometric wearable crafted from titanium, offering up to 8 days of battery life and water resistance rated IP67. It tracks over 50 health metrics including sleep, heart health, stress, and women’s health, powered by adaptive Smart Sensing technology. Compatible with iOS and Android, it supports multi-ring style changes via the Oura app and includes a one-month membership to Oura’s health insights platform.
| ASIN | B0D9WW4XVP |
| Additional Features | Activity Tracker, Cycle Tracking, Daily Workout Memory, Lightweight |
| Age Range Description | Adult |
| Band Color | Stealth |
| 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 | #327 in Electronics ( See Top 100 in Electronics ) #4 in Smart Rings |
| Brand | OURA |
| Built-In Media | Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide |
| Clasp Type | Tang Buckle |
| Color | Stealth |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone |
| Compatible Phone Models | Compatible with iOS and Android devices |
| Connectivity Technology | Bluetooth |
| Controller Type | Owner |
| Customer Reviews | 4.0 out of 5 stars 9,385 Reviews |
| Display Type | No Display |
| GPS | GPS Via Smartphone |
| GPS Geotagging Functionality | GPS Via Smartphone |
| Global Trade Identification Number | 06430060153578 |
| Human Interface Input | Unknown |
| Item Dimensions | 1.06 x 1.06 x 0.31 inches |
| Item Weight | 0.19 kg |
| Manufacturer | Oura |
| Metrics Measured | Body Temperature, Menstrual Cycle, Sleep Duration, Stress |
| Model Name | JZ90 |
| Model Number | JZ90-54218-13 |
| Operating System | i_os, android |
| Shape | Round |
| Special Feature | Activity Tracker, Cycle Tracking, Daily Workout Memory, Lightweight |
| Sport Type | Multi-Sports |
| Style Name | Metallic |
| Supported Application | Various health and fitness apps, iOS, and Android |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adults |
| Unit Count | 1 Count |
| Warranty Description | 1 Year Manufacturer |
| Warranty Type | Standard/Full |
| Water Resistance Depth | 100 meters |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IP67 |
| Wearable Computer Type | Smart Ring |
| Wireless Communication Standard | Bluetooth |
| Wireless Compability | Bluetooth |
A**K
Best ring out there, pricey, no real customer support, touchy feely software.
Really it's a 4.5 stars from me because the software interface is so wordy & cumbersome to navigate. But this brings some science to your sleep. I'm an insomniac--just a night owl in an early bird world, but this ring really helps me improve my sleep. These are great rings. To me rings are superior to bracelets because I work with my hands & power tools so bracelets are out of the question. These are pricey, but good & offer a ton of colors. They offer a ton of sizes. I get it wet, although I take it off to charge when I bathe/shower. I also remove for dishwashing. It can get wet, but eventually that wears them & at the cost, I'm going to keep it as long as I can. I've gotten the stealth twice & love it's matte finish. It can scratch. You can buy thin tape covers if you're worried about that, or take it off for sanding & scrape potential wear. The sensors seem more sensitive from the Gen 3 to Gen 4--less hand falling asleep data during sleep. I switch which hand it's on in my sleep when I roll over most of the time. I started with Motiv ring (bought by Oura,) so I know how good software could be. The Oura software gets annoying--beginning with the subscription. Not cool, only offered monthly, not one time annual fees, uncool. Then there are the updates: they can stop your ring from uploading or syncing at all, so I suggest you stop new software downloads after 2 or 3 upgrades, and back up your data before any download. Why this is critical--I was getting heart surgery & lost ALL my data & neither I nor my doc was able to access it with my last ring, Gen 3. The AI assistant, like most AI these days, is a means for a company of offering ZERO assistance AND not having to pay anyone who might actually help you. The folks answering emails were helpful before the AI. The AI offers a useless loop. I filed tons of questions & complaints & it never escalated to being responded to by a person. Never helpful. Reddit is your only real customer service with Oura. The gen 4 has improvements to the ring: the batteries are NEVER what they claim, 8 days, no way. 5 & change for me. Although this one is lasting longer than my Gen 3 ever did. The sleep data is more sensitive & accurate with this ring. Some of my family calls it the "no duh ring" as in you wake feeling rough, & the ring tells you why--you barely slept. The software interface is a little silly. I don't want any adjectives. I'd just prefer pure data: numbers like REM, Deep Sleep, HR, HRV, RHR, Temp etc.. It's geared toward anxious folks who need cheerleading & advice; I don't want that. If you need that, you'll love this. The entire section on stress is useless to me & mischaracterizes some situations: like happy endorphins for stress; nope! Very few of us can do much about the stress we face, seeing the report is just annoying. Get rid of it. Or let us get rid of it & keep the features we want from that category. And hiding your temp in the readiness section, which is otherwise totally useless...annoying, Woof! I wish we could customize our categories & presentation so I just got #s, and not their numbers--they give you a score for your sleep, activity, HR, & Readiness. Not universal & metrics aren't available so they're as meaningless as their cheers or suggestions. I wish they listed more work outs. And you used to be able to track your heart rate live while exercising. Not anymore. Why not? It's so basic & people loved it. I want to get to a heart rate & hold it over time, increasingly, but don't get that choice now. Lastly if they made their algorithms public to medical institutions, they could be marketed as a tool for sleep studies & HR for cardiology. Either their algorithms are not up to snuff, or they're insecure.
A**R
Lasted 1 year
Was a comfortable , stylish ring and good health tracker but died after just over a year. Battery life deteriorated to 2 days but reported fully charged after 5-10mins on dock, and now it won't charge at all. Too expensive to replace annually on top of membership fee. I used the AI chatbot on the app, took only a few minutes of simple testing to prove it had failed and they instantly ordered a replacement free-of-charge (with a spare USB dock to boot), which arrived in 4 days. Amazing service!
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.
M**S
Smart Ring for the win!
I’ve been wearing the Oura Ring 4 every day, and what stands out most is how seamlessly it fits into my routine without me having to think about it. It’s comfortable enough that I forget it’s on, and the sleep insights have actually helped me notice patterns I didn’t realize were affecting how I feel the next day. The activity tracking feels more realistic than a smartwatch since it doesn’t nag me, but it still gives me a clear picture of how active I’ve been. Battery life has been solid—I only need to charge it every several days—and the gold finish looks more like a piece of jewelry than a gadget. It’s become one of those things I rely on quietly because it gives me useful info without adding any clutter or hassle.
M**N
1 Month Post Purchase Review
Overall, I love it. I’m gonna break down my review as to why I love it and based on what you’re looking for in a smart ring to determine if this is a good fit for you. First, appearance. It doesn’t look masculine and is fairly scratch resistant. With any jewelry, you’re going to have a little scratching on the underside if you do anything with your hands. There’s plenty of protection options if that’s something you want to look into, but honestly I’ve had minimal scratching and it doesn’t bother me. It fit closer to my actual ring size, but you need to get sized to figure out your actual size. Oura offers a $10 you can order, but I personally just went to Best Buy and got my size off the display there. I believe Target also has sizers in the Oura display. But you do need to get fitted to know if the sensors are at an optimal location for best readings. Next category is App Quality. I really like the app and the reliability of the data it provides. I am not a super intense workout person, so it is perfect for my low impact workouts. I’ve heard people say it doesn’t provide accurate HR readings in higher intensity workouts, I see some improvement for that as you can have it track live HR data. I know a lot of people complain about the subscription and I just want to clarify that because I looked at that myself. The annual subscription is $69.99, monthly is $5.99. You can use the tracker without a subscription, however it gives you very basic data feedback. It tracks the basics, but does not give you pointers for improvement or how to better your scores. With the subscription, you’re not only paying for the insights, but you’re also paying for the access to Oura Advisor, the AI integration that can give even further insights to the data you have logged in app and the feature to simply take a photo of a meal for meal logging. Women’s Health: I personally like it. I have used Apple Health for many many years so it’s my primary for reliability in start dates, but I like the detailed data with Oura. I think with further use of the Oura I might 100% convert to it but for now I can’t decide which I like better. Given my current medical, this is a fantastic tool for me. Tags has been the best way for me to tie symptoms to more probable causes rather than wondering and guessing or assuming. I was most drawn to that feature, but you have to remember to add the tags for it to be most effective. If simple tracking without a bulky smartwatch is more what you’re looking for, this will definitely do that for you but cheaper alternatives can do the same if you’re looking to save some money. If you have more complex medical and want the data insights to your health and be more in tune with your body, you want the Oura ring with a subscription. The good news is that you can actually use an FSA / HSA for both the ring and the subscription. Mine gave me almost no trouble as far as documentation when I purchased them.
J**0
Overall great
⭐⭐⭐⭐ Overall, I’ve had a really good experience with my Oura Ring! I’m giving it 4 stars because it is a little chunkier than I expected, and unfortunately, it scratches pretty easily. I’ve also had some issues with Bluetooth connectivity from time to time. That being said, I have to give major credit to Oura’s customer service. I reached out about the connectivity issue, and they sent me a replacement ring without even requiring me to send my current one back first! That was honestly such a pleasant surprise and says a lot about how they take care of their customers. Aside from those few issues, I really enjoy my Oura Ring and have had a great experience with it overall. Definitely happy with my purchase! ❤️
D**S
Surprisingly in love
I love that I was able to find a ring that fits my finger. You’re gonna appreciate its charging capability, appearance, battery, life, step count, sleep, monitoring, and the quality of its app. It has made a huge difference with me keeping up with my steps, but most of all monitoring how well or where I need to improve with my sleep.
D**N
No for long term use.
I was thrilled for the first 6 months I owned this ring. It worked amazingly well. Then I noticed the battery life dropping slowly over the next few months. After 8 months, the battery wouldn't last a day. I spoke to customer service and they happily replaced my ring with a refurbished one. Apparently battery life was an issue they knew about. My new ring once again was great for about 6 months, then the battery started to drain very quickly. I was informed they wouldn't replace it again so I limped along, charging it multiple times a day. I had 6 months left on my year subscription so I did the best I could. In the last week, it has stopped tracking my sleep and most of my movement. I gave it 3 stars because it did work well for a while. I'm not someone who needs the newest and shiniest gadgets, so I can't justify spending this much money (I bought the gold ring) on something that won't last or do the basic function. Back to my Apple Watch I guess.
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 weeks ago
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