COLMI R02 Smart Ring with code - ColMi official store

Good to know, pass then.

You want to have a look at something like gotapster.com or cnick.co.uk

I've had a Tapster payment ring since the back end of last year, registered to my Curve card

It still never ceases to amaze people when I pay with my magic finger

Best bit of kit I've bought in years, no more messing about with cards, wallets, phones, smartwatches just put your knuckles on the terminal and you're done

If you get one my tip is to get one for your dominant hand it'll just feel more natural when you reach for the terminal

The sensors on COLMI R02 are not fake, they do really work. And yes, I know this video and tested ring on carrot, parsnips etc. and it shows error and not measure anything. But the thing is they are cheapest ones and accuracy is very poor.

What ring size did you go for buddy? Tia

From heart rate and movements. That's how all smart watches do, including Apple and Samsung. I have this Colmi R02 ring for over a month now and actually I like it. Records precise time when fall asleep and wake up time. Other sleep data is not what I can be sure it is right or wrong. Heart rate measurements are not most accurate comparing with Apple watch, but are ok. It feels nice on the hand, battery lasts 4-5 days. I have spent £26 on it and it is really good for what it is at such price.

When shopping for wedding rings the lady in Beaverbrooks measured my finger, said it couldn’t possibly be that size and jammed one on my finger that was several sizes smaller.

Fortunately Beaverbrooks have a stash of butter in the back room for these situations

It has no NFC and has no GPS. Why do you think this is a "massive security risk"?

> Physically impossible to take it it that extremity.

The concept of smart rings measuring blood pressure, much like with smartwatches, is not inherently against the laws of physics, but it does face substantial technical and practical challenges. The primary issue lies in the method required to accurately measure blood pressure without a traditional cuff, which is designed to momentarily stop and then measure blood flow.

Smart rings have even less surface area than watches for housing sensors, which could make integrating the necessary technology for accurate, cuffless blood pressure measurement more challenging. However, advancements in miniaturization and sensor technology could potentially allow for innovative approaches to blood pressure monitoring from smaller devices.

Several methods for cuffless blood pressure monitoring are being explored, such as:

• Pulse Transit Time (PTT): This method estimates blood pressure by measuring the time it takes for the blood pressure pulse to travel between two arterial sites. The challenge in a ring would be accurately measuring this time over such a short distance and with limited sensor capabilities.
• Optical Sensors: Advanced optical sensing technologies could potentially be used to estimate blood pressure by analyzing changes in blood flow or the behavior of blood vessels under the skin. However, the accuracy of these methods needs to meet clinical standards.

Smart rings could theoretically incorporate such technologies, but they would need to overcome challenges related to sensor accuracy, battery life, and the physical size limitations of the device. Furthermore, any device intended for medical-grade blood pressure monitoring must undergo rigorous testing and receive regulatory approval to ensure its accuracy and reliability.

As technology progresses, it's possible that we'll see more advanced health monitoring features in smaller wearable devices, including smart rings. However, as of April 2023, such capabilities were still in the research or development stage, and no commercially available smart ring offered reliable, cuffless blood pressure monitoring that met medical standards. The field of wearable health technology is rapidly evolving, so future innovations could potentially change this scenario.

I've already ordered one without problems, this might be a settings issue.

only Captain Landfill I'm afraid.

Not gonna lie, ma mind went way off of what you said

I was waiting for the one ring comments.

There's always going to be people!

This ring hasn't got gps so nobody will track you.
For people who are saying such a nonsense things I would advise just to buy it and test by themselves and if not liked, just bin it. It cost just 20 quid and that money easily goes in just one night at the pub. (edited)

The irony!!

I bought this one for trial but will definitely upgrade to the iRing when it’s out

Yep

The oura ring apparently does most of the things the likes of the Fitbit does, the problem is that is about £270, so I guess it comes down to budget Vs requirements.

Probably as my haribo jelly ring doesn’t capture any data therefore this one is smarter.

They are all the same in smart features on cheapo ones; all values they show is more a guess than real. Lots of steps are missed(even some 1820 steps magically appears through the sleep), heart rate hit and miss, SpO2 is complete guess as well as sleep tracking.

Green lantern maybe, but not sure about green lanten.