It was purchased at the end of November, connected to the mobile phone via Bluetooth, and since then it hasn't left my hand...
So, for the past 5 months, it records everything I do (heart rate, distance, O2, sleep, etc.)
Its measurements are often incorrect...
In terms of sleep, it definitely doesn't provide accurate measurements that I consider worth evaluating....
And as for blood oxygen saturation, it simply gives random readings... many times it considers me "dead".... (well, now, do pulse oximeters lose accuracy? Will a watch lose it?)
As for heart rate, I believe it misses quite a lot, as I am a long-distance runner and I always had purely running watches that easily capture changes in pace.
For the above, it is very likely that it needs to be worn tightly as the instructions say, and maybe it's my fault for wearing it relatively loosely....
Regarding steps, while it accurately counts during walking, many times when I drive for an hour, it shows that I took 1000 steps.....
I only take it off in the bathroom because I read that someone had strange behavior with the speaker after showering, so I don't want to risk it, even though most of the comments I've seen don't mention such an issue, but you never know.....
The good thing is that you receive messages, emails, and calls without having to constantly check your phone.... like the great convenience of talking from the watch.
A tremendous advantage is its very long battery life!!!!
If you are an athlete, I recommend getting a running watch (Suunto, Garmin) which have been in this sport for years and have many more functions since those watches were made for this purpose....
Overall, it's a very good watch, beautiful with a very good screen, and basic functions.
If you don't want something specialized, I recommend it for its very long battery life, as other watches of the same level don't even have half the duration...
Also, its construction is very good, the price is good, and I also bought a bracelet that really enhances the appearance of the watch!!!!!