I received it as a gift, replacing the Xiaomi Mi Smart Band 6 that I had.
It has no accurate measurements at all. Neither in steps (I have entered my details), nor in sleep tracking. I get up at night, use the flashlight it has, walk around the house, drink water, etc... it shows me in the morning that I was awake for 1 minute, while I have been awake for over half an hour.
Not at all accurate measurements in heart rate (I didn't expect it to be precise) but it shows 99 beats when I have 60, or 110 when I have 80.
The old band had much more accurate measurements in steps, sleep, heart rate, etc.
The other day I was drinking a glass of water and it wrote: are you maybe jumping (exercise).
It has China NFC which does not work in Europe, and it is not suitable for payments.
It shows the steps, but not how many meters/kilometers you have done.
You cannot change the goals (in steps/calories, etc.) from the band, only from the watch.
It does not connect with the first mobile, it takes at least 2 tries.
It says it can transfer data from the Zepp app, but it does not.
I consider it a big failure and wasted money. I have turned off all notifications and anything I found to make its battery last a little longer.
Up to 35 euros because it is a bit nice (if you like that sort of thing) is fine,
I wear it because it was a gift from my most beloved person.