I’ve been supporting Oura since it was a kickstarter. I had the version 3 and decided not to upgrade but since my spouse lost her ver 3 I gave her mine and ordered this.
If you’ve never had an Oura ring: this product is amazing. So comfortable, more so than a watch. The app is great, I’ve learned so much about sleep habits, what to do and not to do for sleep. Lovers of science will like this, you can literally experiment and see the exact results for yourself.
Accuracy: I would say this is 95% accurate. Again, I’ve been using this for about 5 years. So I’ve seen the accuracy improve IMMENSELY over the years. Version 4 is the best yet. Better than any other sleep tracker I’ve tried and I’ve tried a lot. The biggest inaccuracy is every now and then I’ll get up to pee in the middle of the night and it will think I woke up for the day. Sometimes it knows I just went to pee sometimes not. Since I noticed it, I take my ring off if I get up to go to the toilet and it fixes the issue—just don’t forget to put it back on!
Key info for consumers: the fit is slightly larger than the version 3. To be exact I would say the version 4 is about half a size larger. So the new size 7 for example, would be a size 7.5 on the old version 3 and older models.
The new size is great for me. My old ring was snug on my ring finger. So now I can wear the new one on my pointer finger and even middle finger depending on how hot it is. It all depends on the temperature outside due to our hands expanding/shrinking in heat/cold. Hot days I’ll wear on my ring finger, cold days I can wear on my index or middle finger.
Conclusion: I love the Oura ring. It’s more comfortable than an Apple Watch or a woop in my experience. Way, WAY more comfortable. It’s also very accurate and the info is extremely useful. It’s increased my understanding of sleep, the importance of exercise for sleep, and dare I say, made me a better person. Getting better sleep takes effort, and this is merely a tool to help you do that. Getting better sleep can 100% make you a better person and I speak from my own experience.
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Frequently bought together
This item: Oura Ring 4 - Silver - Size 9 - Smart Ring - Size First with Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life
$349.00
Get it as soon as Monday, May 5
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$6.59
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$19.45
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From the manufacturer
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Size before you buy
The Oura Ring 4 Sizing Kit is the best way to ensure an accurate experience. With a purchase of the sizing kit, you'll receive a $10 Amazon credit towards your Oura Ring 4.
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Easy to wear, everywhere
Sleek and comfortable, Oura Ring seamlessly fits into your life from a workout to a night out.
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No interruptions
Stay present without notifications on your wrist. Check the Oura App when you want to.
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Built to last
Oura Ring 4 is fully titanium: one of the strongest metals on earth. Durable, lightweight, water resistant.
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Accurate by design
Oura Ring 4 delivers incredibly accurate data and personalized health insights to help you be at your best.
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Sleep
Wake up to in-depth sleep analysis, so you can improve your habits and transform how you feel.
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Activity
Whether you're running a marathon or running errands, Oura tracks your daily activity and workouts while helping you strike a balance between movement and recovery.
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Readiness
Know when to push it and when to take it easy. Your Readiness Score tells you how energized you are using over 30 biometrics — it can even tell when you might be getting sick.
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Stress
Oura will help you identify signs of stress and understand how well your body handles it. You'll know when you need to incorporate more self-care practices and how to recover from long term stressors.
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Heart Health
From monitoring your daily heart rate and HRV to discovering your Cardiovascular Age and Cardio Capacity, Oura helps you take care of one of the key indicators of your overall health — your heart.
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Women’s Health
Your cycle impacts your mood, sleep, activity and more, every day. Oura helps you understand how your cycle affects your body, so you can make better, informed decisions about your holistic health.
Size Before You Buy
Step 1:
Purchase an Oura Ring 4 Sizing Kit and receive a $10 Amazon credit towards your Oura Ring 4.
Step 2:
Purchase your Oura Ring 4, the $10 credit will be automatically applied at checkout.
Step 3:
Slip on your Oura Ring 4 and download the Oura App.
Step 4:
New members get the first month of Oura Membership free, then it’s $5.99 per month.
What's in the Box
Oura Ring 4
Oura Ring 4 Charger and USB-C Cable
Product information
| Product Dimensions | 1.02 x 1.02 x 0.28 inches |
|---|---|
| Item Weight | 6.3 ounces |
| ASIN | B0D9WWB3WX |
| Item model number | JZ90-54217-09 |
| Batteries | 1 Lithium Polymer batteries required. (included) |
| Customer Reviews |
4.3 out of 5 stars |
| Best Sellers Rank | #2,226 in Electronics (See Top 100 in Electronics) #4 in Smart Rings |
| Connectivity technologies | Bluetooth |
| GPS | No GPS |
| Special features | Heart Rate Monitor, Activity Tracker |
| Other display features | Wireless |
| Human Interface Input | Buttons |
| Color | Silver |
| 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 |
| Ram Memory Installed Size | 512 KB |
Warranty & Support
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.
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Oura Ring 4 - Silver - Size 9 - Smart Ring - Size First with Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life
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Good but bulky.
Ordered this to help track vitals and health info as I navigate perimenopause. The features are helpful, though it takes about 60 days to gather enough information to establish enough data for patterns. The ring seems to hold a charge for 3-4 days before needing to charge again. The biggest drawback (aside from the monthly/annual fee in addition to the price of the ring) is the thickness of the ring. For someone with smaller hands, this ring is quite gaudy. It separates my fingers and feels very awkward. I think perhaps wearing it on a pointer finger would help minimize the awkwardness. However, in trying to reduce the amount of stress on the ring by wearing it on a lesser used finger, I am hoping to reduce wear and tear to the ring. Overall, it is a practical tracker and I am enjoying the benefits of the ring. I do hope they will continue to slim down the ring’s profile for future models.
Top reviews from the United States
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Top reviews from other countries
- Felix SngReviewed in Singapore on March 1, 2025
Oura Ring cannot be delivered to some locations.
Color: Sizing KitSize: Sizing KitVerified Purchase -
CarlitaReviewed in France on April 24, 2025
Abonnement obligatoire !!
Color: SilverSize: 9Verified Purchase -
Flavio LópezReviewed in Mexico on December 22, 2024
Es un excelente producto
Color: BlackSize: 9Verified Purchase -
Kindle CustomerReviewed in Mexico on December 11, 2024
Satisfecha con el producto
Color: Sizing KitSize: Sizing KitVerified Purchase -
Jean-MichelReviewed in Germany on April 18, 2025
Perfekte Möglichkeit Schlaf zu analysieren
Color: StealthSize: 10Verified Purchase
