The Redmi Watch 4 supports a customized watch face background (needs to update to the latest system).
For your reference, here are some details about the setting method:
Open the Mi Fitness App and ensure the device is correctly connected and synced;
Navigate to the [Device] page;
Tap [Manage watch faces] to enter the watch face management page;
Tap [Online] to enter the watch faces market and select [All];
Select [Custom] and select the style you prefer;
Adjust the color, style and add the photo you prefer;
Tap [Apply].
Note:
With different styles, you can choose to display different data items in the dial, such as steps, heart rate, power, and weather. The visual optimization of the square dial has optimized the problem of abnormal display of the dial in an extremely dark environment.