A very interesting device, everything is simple and clear, works with the iPhone without any problems, haven't checked the accuracy.

The truth is that I have been pleasantly surprised by the functioning of this ring; the sleep measurement is better than the Huawei Fit Four, so I decided to keep only the ring and sell the watch. The ring is a spectacle; it works very well. It perfectly measures sleep, steps, blood oxygen, and blood pressure—totally recommended.

I rarely leave reviews but this smart ring has really impressed me (no brand? Clone of some other chinese ring? No idea). I mean for 15 euros or so it's been on par with my mi band 10. There is some deviation of sleep and step counter, but so far it has been under 6-8%. You just have to make sure the sensors are ideally on the inner part of your finger (as per manual). So far, can't fault it. Even the app is great for me, i mean no bloatware, no weird privacy requests that block functionality etc. Just poor translations but that's it. 4.2/5 stars for me

Product arrived within the expected delivery time, works perfectly, bought for my wife, downloaded the apk and it works well.
Everything is fine.

Fits perfectly and works just fine👍

That ring seems really cool, I liked the purchase.

I love this ring, it does everything i wanted, measures sleep quality, syncs easily with the phone, measures steps and exercise during sports, delivered quickly i recommend the seller. My advice: take a slightly larger size if you want to measure sleep because our fingers swell at night.it measures blood pressure, heart rate and oxygen. It's great, a thousand times better than the 400€ watch my husband bought. I highly recommend this product. Thank you to the seller for his professionalism and reliability.

Received! The ring is very fashionable. The quality is very good and very durable. Very satisfied!

The size was larger than expected, so I was surprised. It lasted for 3 days comfortably.

Great part that shows everything that interests me. The ring itself is somewhat challenging because it is slightly "thicker" than a regular ring. Connecting with the phone was very easy.

Pleasantly surprised. The shipment was fast. The product is very good. The packaging is nice and simple.

Super comfortable, I really liked it....

Super quality, a bit complicated to set up but with patience I managed to do it.

Super quality

Amazing!!! - looks incredible next to my actual gold rings.