The S1 is Xiaomi's top smartwatch. Its stainless steel casing, OLED display, and long battery life speak for themselves. However, as the following review shows, the S1 still has room for improvement in certain areas, some of which could be solved by future software updates.
https://www.notebookcheck.net/Xiaomi-Watch-S1-Smartwatch-review-Allrounder-with-shortcomings.625448.0.html