How to adjust the brightness of the dial on the Xiaomi Watch S3?

The brightness of the watch can be automatically adjusted or manually set.
1. Automatic brightness
The watch defaults to automatic brightness, which will be automatically adjusted according to the ambient light;
You can set it by the following step:
On the watch, open the [Settings] APP >> [Display] >> [Brightness] >> [Auto].
2. Custom Brightness
It supports step-by-step addition and subtraction of interface buttons, as well as sliding the brightness bar to adjust brightness.
You can set it by the following step:
On the watch, open the [Settings] APP >> [Display] >> [Brightness] >> turn off the [Auto] option >> [Custom] >> select the appropriate brightness level (adjust the brightness bar by dragging or the brightness button by touching).

Note:
Custom brightness can only be operated after automatic brightness is turned off.