What is the Screen on for function, and how to enable it on the Xiaomi Smart Band 9?

After Screen on for function function is enabled, the band screen will remain on for a certain period.
To set the Screen on for on the band, please refer to the steps as follows:
Enter the main interface of the band >> [Settings] >> [Display & Brightness] >> [Screen on for]. You can choose from [5 seconds], [6 seconds], and so on. After being turned on, power consumption will increase sharply.