R02

None of the Colmi rings are accurate with regularity, but even a broken clock is right twice a day. The sensors that go into the Colmi rings (and other clones) are so outdated that they no longer have any real commercial value...which is why the rings are so cheap. The high DOA rate and short life o

it's a scam. The ring is a cheap colmi variant, the measurement of bp is a false claim for most of the rings in general, but for that one especially. There are very, very few rings with cuffless bp measurements and no colmi ring is among them.

That is more useful than anything I had, thank you. The separate state machine explains something that has been bothering me for months: an interrupted bulk sync on my side does not fail cleanly, it comes back as a partial night attributed to the wrong day. I had a workaround for the symptom and no

As with all of the rest of the rings on this list, the Haale and Haale II are "white label" rings that have been licensed from China...in other words, a "clone." Clones are not copies, they are the same, identical devices. The specific device may vary with the examples above, but I will specify here

Look for the Colmi rings thaf use the QRing app if accuracy doesn't matter. But buy several extras as they do sometimes arrive dead on arrival. Look on Temu or Ali for R06, R07, R09, or R10. You could even mix and match as the hardware is identical except the 9 supposedly adds a skin temp sensor.

I would like to know too, I am currently using the Colmi Rings R9. Tracks well but the app is not good deletes data and cannot change or add sleep and menstrual data.

I have a Colmi R02. Battery lasts 3 maybe 4 days. Activity and Sleep tracking is OK. Less accurate than Huawei Band (which is less accurate than Apple Watch). Ring is bulky and leaves an indent on my fingers. Also fingers unable to close together when straight. For the cheap purchase cost it is defi