The Bluetooth or wireless option/modules can be used to tune without the need of a physical USB cable connection.
All modules are preconfigured to 115200 baud making tuning a lot easier.

A nice extra feature of the wireless modules are the possibility to run MSDroid App and tune on the spot and/or have a nice detailed cheap interface! (also possible over USB if you Android device supports it)

If you are intressted in more info or downloads, we advice reading further on the official MSDroid webpage:

Link to MSDroid website