Bluetooth File Exchange is a utility that comes with the Mac OS Xoperating system, used to exchange files to or from a Bluetooth-enabled device. For example, it could be used to send an image to a cellphone, or to receive an image or other document from a PDA.
As of Tiger (OS X 10.4.6), Bluetooth File Exchange supports:
Receiving files, including multiple selected files
Sending files
Creating remote folders
Navigating into a folder by double clicking
Limitations
Cannot get or put folders
Cannot move items on the remote device
Keyboard shortcuts such as cmd-↓ to open a folder are not recognised