R02

I have a cheap Colmi Ring, heart rate, steps and sleeping is quite accurate, battery last 5 days and has been quite reliable, super happy for now. Cost around 25usd

I recently discovered the Colmi rings. I went with R09. I haven’t tried more expensive brands or those with newer tech. But mine seems fairly accurate for sleep. I’m happy and see no reason to upgrade for now. But if I do, it’s likely to be a Ringconn.

i have a Colmi R09 and R02. 09 is slightly more accurate, but battery lasts about 2 days. 02 is a bit less accurate but "good enough" for me for sleep, activity, and exercise tracking and battery lasts over 4 days.

I've been using a colmi r03 for the past few months for sleep tracking. Like others said, its not the most accurate and sometimes it is missing a night of sleep in the app but for $20 its pretty great. I originally bought the r02 but it was the wrong size so I had to buy another. As far as I can tel

I brought the R02 from tiktok for £13 including delivery as a trial after seeing a colleague using it. It was much better than I expected, felt nice to wear. I tracked lots of walk and some strength training. The ring has held well even with wight lifting and other stuff, I didn't take extra care bu

I use a Colmi R02 and the sleep data is very similar to Amazfit and Samsung