How to format a MicroSD card on the Xiaomi Outdoor Camera CW300?

For your reference, please check the following steps:
Go to the [Mi Home/Xiaomi Home] APP >> select [Device card] >> tap [...] at the upper right corner >> select [Manage storage] >> tap [SD card status] >> tap [Format SD card].
Note:
Formatting will erase all the videos on the MicroSD card. Please be sure to back up the videos first.