Boox Color Series User Manual page 12

Edit
The icon in status drop-down menu can be adjusted, like add,
remove, and re-order.
Multi-tasking switching
Clicking this icon, pop up the Android multi-task list to check the running
applications in the background, one key to clear up all the applications to
speed up the device.
Wi-Fi Setting
When using at the first time, you should enter into the Wi-Fi setting
interface to get a accessible connection. Then click the icon to turn on/off
the auto connection.
Bluetooth Setting
When using for the first time, you should enter into the Bluetooth setting
interface to match a device you want. The matched earphone, page turner
can be auto-connected by clicking the icon. Certain devices do not