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OURA

Oura Ring 4 - Stealth - Size 12 - Smart Ring - Size First with Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life

    • Based on 1,014 reviews
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Availability: Only 2 left in stock, order soon!
Fulfilled by Amazon
Arrives Wednesday, Feb 26
Order within 16 hours and 38 minutes
Available payment plans shown during checkout

Color: Stealth


Size: 12


Description

Introducing Oura Ring 4: the latest evolution of the revolutionary smart ring. Oura Ring 4 brings you closer to what matters most — your health. The updated all-titanium design is powered by Smart Sensing, a new sensing platform that doesn’t just measure your biometrics, it adapts to you, providing insights into over 30 biometrics including sleep, readiness, activity, heart health, stress, and women’s health. Oura Ring 4 quietly and comfortably monitors your health and with up to 8 days of battery life — you can forget it’s even on. Sleeker, smarter and more accurate than ever, Oura Ring 4 is made for you. Oura Ring 4 is FSA/HSA Eligible — we can accept FSA or HSA funds for the following: Oura Ring 4, additional chargers, and shipping. IMPORTANT: Size yourself with the Oura Ring 4 Sizing Kit before you buy — Oura Ring 4 is not US standard sizing, and finding the right size will result in the best experience possible. With an Oura Ring 4 sizing kit purchase, a $10 credit will automatically be applied to your Oura Ring 4 at checkout.

Product Dimensions: 1.02 x 1.02 x 0.31 inches


Item Weight: 6.4 ounces


Item model number: JZ90-54218-12


Batteries: 1 Lithium Polymer batteries required. (included)


Special features: Sleep Monitor


Other display features: Wireless


Color: Stealth


Whats in the box: Oura Ring 4, Oura Ring 4 Charger, USB Cable, Information Booklet, Quick Start Guide


Manufacturer: Oura


Country of Origin: Estonia


Date First Available: October 3, 2024


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Feb 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • i have never really like any other heath tech device as much as this.
Color: Rose Gold Size: 6
i love my oura ring , its so stylish - literally can make you look drab to dressy and chic.other than good looks - its very efficient ,i can only wear this ting to bed and the app does a fab job at analyzing your sleep parameters.- quality , restfulness, readiness, length (REM, DEEP and many more) love the cycle tracking - tells your your basal body temperature and possible period start dates. has good selection for health tracking and activities . its all in one , all of my family uses it and loves it ! ... show more
Reviewed in the United States on January 29, 2025 by Vatsal Mehta
    • Love Love Love my Ring!
Color: Black Size: 8
Review Image by AshleeGrimm AshleeGrimm
I recently upgraded to the Oura Ring 4, and it has completely changed the way I track my health! The sleep tracking is incredibly detailed, providing insights into my sleep stages, readiness score, and recovery. I also love the continuous heart rate monitoring and activity tracking—it helps me stay mindful of my overall wellness without the bulk of a smartwatch. The ring itself is sleek, lightweight, and comfortable, making it easy to wear 24/7. The battery life is impressive, lasting up to 8 days before needing a charge. The sizing kit was super helpful in ensuring the perfect fit. If you're looking for a discreet yet powerful fitness and wellness tracker, the Oura Ring 4 is absolutely worth it! Highly recommend! ... show more
Reviewed in the United States on February 9, 2025 by AshleeGrimm AshleeGrimm
    • Amazing and very helpful if you have anxiety
Color: Silver Size: 9
The brushed silver is much nicer than standard silver one, the standard silver one is ugly. Brushed silver looks so much better. It tracks sleep very well and gives you great insight to your health. Never would I have thought of spending this kind of money on a health ring, but it helps my anxiety - Just be aware for all the features you have to subscribe and its an annual fee, that is the only down side so far. It also scratches very easily so if you work with your hands, or are clumsy its gonna scuff. ... show more
Reviewed in the United States on February 3, 2025 by Doktor Huxtible
    • Give it time to feel normal and store data.
Color: Silver Size: 12
When I first put on the ring, I didn’t like it. It felt bulky and I was constantly changing fingers. Finally, after more than a week, I settled on the middle finger of my non-dominant hand. I sleep with it on, but I’m not sure how accurately it tracks my REM versus non-REM. I also JUST found the oxygen saturation metrics under the sleep screen. This ring does a LOT more than I initially thought. My ring is the polished silver and I am not having any issues with scratches or markings. The battery life seems good. I charge it about every 5 days or so. I like the sleep and activity reminders. The app is good and easy to use. It takes several days to track and store usable data for trends. Pairing the ring with the app was simple. Overall I’m happy. ... show more
Reviewed in the United States on December 8, 2024 by Josh
    • Love my new Oura ring!!!
Color: Rose Gold Size: 8
Review Image by Jamie Taylor Jamie Taylor
I am obsessed with my new Oura ring. First, it’s so fashionable and comfortable. I’ve already been complimented several times and I’ve only had it a few days. Its heart rate monitoring is accurate. I love that it can recognize what activity I’m doing and it’s correct! I was cleaning the house this past weekend and it recognized I was doing housework. Amazing!!!! Definitely buy the sizing bands so you can get the right size and correct fit. Oh and I love the comprehensive sleep and readiness scores. So insightful. Love this ring! ... show more
Reviewed in the United States on January 27, 2025 by Jamie Taylor Jamie Taylor
    • Awesome smart ring
Color: Gold Size: 11
Love th gold color, and is comfortable. Get the ring testing kit before buying and you get a credit on the purchase. I use it on my left index finger I track my sleep, stress, oxygen, temperature changes at night, readiness score for the day and more. It’s very useful. I love to see how ready I am for the day and my sleep levels If I get more than an hour deep sleep I know I am good Anything over 1.5 hours of deep sleep is excellent. I can also see my REM sleep to see how long I was dreaming. Awesome ring. Love it ... show more
Reviewed in the United States on January 19, 2025 by Dude
    • Quite useful, despite some quirks
Color: Silver Size: 13
I bought the Oura 4 primarily to analyze my sleep, but I have ended up wearing it all day. I have an apple watch ultra that is fine for daytime activities. I thought the Oura would be better for analyzing sleep because it has the SpO2 sensors for oxygenation, and the battery lasts much longer after a charge than the apple watch. The information it gives me about the quality of my sleep is better than I expected, and I now have a better understanding of what my issues may be at night. It shows you when your oxygen levels varied during the night, which is useful, but one of its quirks is that it doesn't show you the actual timeline of blood oxygen values. I would really like to see the actual values and not just the periods of variability in a timeline. It does give the average value during sleep, and it seems to think my sleep is ok, which reassures me that I probably don't have sleep apnea. Also, I wore both my apple watch and the Oura for two nights, and they gave significantly different values for the total time awake during the night. From my own memories of waking up, the Oura seemed to be more accurate. Also, I came across a research study (paid by Oura) that compared it to the apple watch, and it claimed that the Oura was more accurate for judging time awake. My biggest surprise was today, when the Oura app told me that I was essentially under the weather and I should rest today. In fact, I haven't felt very well since yesterday. It was amazing to me that the Oura determined that. It said my nighttime temperature was elevated and my breathing rate higher than usual. But, in another quirk, it did not actually give me the numbers to back up these conclusions. Did Oura think I could not handle the truth? :) Oura likes to give general conclusions, like your activity levels are fine, your sleep was fine, etc, but it seems like it tries to avoid giving you all the raw data in some cases. I found that very annoying at first, but I am getting used to it. It does give you a time line of activity and HR. I have only had the Oura for a week, and the app has mentioned that it is establishing my baseline for the first couple of weeks. I assume that once the baseline is established, it will be able to tell me whenever I fall outside my usual range on different measures. That should be very useful. I didn't expect to like the Oura ring as much as I do, because I thought it might not provide much more information than my apple watch. But it actually does, at least during sleep. When I think I may be coming down with a bug, it is reassuring to know when the Oura thinks so too. It is also nice that I don't have to recharge it for several days. The Oura cannot replace an apple watch, of course, because it does not display messages and does not have access to apps that I use. The best of all worlds is to have both. ... show more
Reviewed in the United States on December 31, 2024 by Kindle Customer

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