Interested in reviews of Oura Ring 4 Black size 6? It got 4.4 out of 5 stars from our customers. Find specific customer reviews of Oura Ring 4 Black size 6 below. We will appreciate if you also share your experiences with Oura Ring 4 Black size 6 after purchasing.
Rated 05/05/2026, variant Oura Ring 4 Stealth size 10
Verified purchase
Bought at a bargain price after Christmas. 2 claims within 4 months. Despite the fact that I demanded a replacement for a faultless product, Alza resolved the complaint with a refund and due to the prepaid service from Oura I have to buy the ring for a significantly higher price.
great features
I've had to claim twice in 4 months. Instead of the requested replacement, Alza forces me into a new purchase at a higher price.
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Customer, praha
Rated 28/04/2026, variant Oura Ring 4 Silver size 13
Verified purchase
I have mixed feelings about this product. The ring itself is well-designed, comfortable, and the health tracking features are generally accurate. Battery life is also very good. However, I experienced issues with Bluetooth stability in real-life usage. When using multiple connected devices (such as headphones and a watch), the connection can become unreliable. While it usually reconnects, this affects the overall experience and confidence in the device. In my case, I even had to replace the product once due to more serious issues, and although the replacement improved things, the connection is still not as stable as expected for a premium device. Overall, it’s a good concept, but at this price point I would expect more reliable performance without needing to adjust how I use my other devices.
Good design and build quality
Comfortable to wear daily
Accurate basic health tracking
Long battery life
Unstable Bluetooth connection in real-life usage
Connectivity issues when multiple devices are connected
Not always reliable for syncing data
Expensive for the level of stability provided
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Veronika, Praha 9 - Kbely
Rated 24/04/2026, variant Oura Ring 4 Rose Gold size 8
Verified purchase
He was able to recognize an intolerance to a drug in a pill I was newly prescribed. If one is really guided by what one likes, one is more relaxed, fresher.
Great monitoring
Helps to get to know the body
You can pull up data for the doctor
Price
It gets scratched even by ordinary wear.
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Anonymous customer
Rated 13/04/2026, variant Oura Ring 4 Silver size 8
Verified purchase
I switched from Oura 3 and I am very happy. Apart from the fact that the price is quite high, the ring has no drawbacks. I find the material more durable and the measurement more accurate. Beautiful design, luxurious packaging, seamless introduction to the app. Recognises activity well.
Design
measurement accuracy
material quality
package
number of functionalities in the application
price
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Ondřej, Praha
Rated 11/04/2026, variant Oura Ring 4 Silver size 7
Verified purchase
Very accurate measurement compared to Garmin Fenix 7 Pro
Not to feel on the hand
Many features upon subscription payment
Higher price
Obligation to pay a subscription
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Customer
Rated 17/03/2026, variant Oura Ring 4 Stealth size 10
Verified purchase - review from a price comparison website
I have little practical experience to evaluate the product
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Customer, Mohelnice
Rated 28/02/2026, variant Oura Ring 4 Silver size 12
Verified purchase
cool thing
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Pavel, Sulice
Rated 16/02/2026, variant Oura Ring 4 Stealth size 15
Verified purchase
everything it offers works. the measurement in my opinion is more accurate than the apple watch ultra
I would like to see a larger size than the maximum size. 15.
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Anonymous customer
Rated 12/02/2026, variant Oura Ring 4 Silver size 8
Verified purchase
It tracks a lot of useful health data, and the sleep tracking is especially accurate and reliable
I also really like the design, app, and premium packaging
The battery life gets worse over time (1-2 months)
The ring scratches very easily no matter how careful you are. I expected much better material quality.
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Aleš, Praha 10
Rated 29/01/2026, variant Oura Ring 4 Black size 12
Verified purchase
Better than a rock to the head.
From the side of Alza everything is in the best order.
The manufacturer (not Alza) is extremely greedy. Not only is a subscription required for the product (without a subscription, don't even consider it), that's understandable and a matter of business policy. But, I also used a previous version of the gen 3 in which the battery died (yes, I can be glad it didn't blow up and snap my finger). So I stopped paying my subscription. And when I bought the gen 4 six months later, I found that to get access to the original two years of data, I would have to pay for the six months I didn't have the device. When I found out, I tried to find an alternative, which I was unsuccessful in doing, but I don't like the company and as soon as a comparable alternative is available, I'll gladly switch to it. I'm not sure that's a sensible policy.
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