Bluetooth charging bin of the wire, it can be divided into many different types of a terminal, it is not the same. So according to a brand of a Bluetooth charging bin we choose to determine what kind of charging head we use. Therefore, each Bluetooth, its one charging head is not the same.
The smallest Android phone! Flatter! It's not the same width up and down! Narrow at the top and wide at the bottom!
Bluetooth headphone charging head is generally microusb or type-c.