With its display technology and powerful battery of an almost 600-mAh capacity, Mobvoi mainly wants to improve the weak battery life that is typical for WearOS – and it succeeds. The fact that the smartwatch uses "GPS" in its name, even though many wearables record routes at this point, is also justified: with GPS, Beidou, GLONASS, Galileo, and QZSS the TicWatch Pro 3 GPS is positioned very well.
https://www.notebookcheck.net/Smartwatch-Mobvoi-TicWatch-Pro-3-GPS-with-Snapdragon-Wear-4100-Review-Dual-display-and-a-large-battery-ensure-a-better-battery-life.499208.0.html
Assuming you used an Android phone, did you set the phone wear os to unrestricted data, ram and battery usage (if you don't Android closes wear os breaking the connection - setting it to unrestricted doesn't impact battery life noticeably)
Have you tried the Suunto 7 -wear os fitness watch.
I've had this watch for almost a month and it failed after 2 weeks...
Mobvoi has refused warranty as it claims in the fine print that you must not shower or wash your hands with the watch on or you will void your warranty..
There are trending comments on the reddit forums as well as the ticwatch Facebook page.
Buyer beware.