I had the watch for about a month.
1. At first, it synchronized with my phone and accepted calls that I could answer from the watch and talk from the watch. After a few days, the watch stopped accepting calls. I sent a message to the dealership, which served me perfectly without solving the problem. I tried many times to fix it from Google, but I couldn't solve the problem.
2. I had some connectivity problems with my phone. But with effort, it synchronized.
3. The watch tied to the wrist in such a way that it left a mark on a spot on the wrist over time.
4. Within the watch settings, there was the ability to recognize exercise according to the exercise. For example, if you were running, it recognized running, cycling, walking, etc. One day it recognized cycling without me riding a bike.
Another negative that I didn't like very much.
5. The time on the watch was only in a 12-hour format, not a 24-hour format. That is, 8 PM showed as 0800 instead of 2000. Personally, this bothered me.
And the positives:
It accurately measured sleep. Accurate estimation in running with GPS.
It has many exercise functions.
Also, I didn't put it in water even though it claimed to be waterproof. Because I read that some people had issues with it in water.