If you’ve ever wanted to really know all the details about the Bluetooth adapter in your Mac, today’s your lucky day! First, if you’ve enabled the Bluetooth icon in the menu bar (via the Bluetooth System Preferences panel), try Option-clicking on it. On the first row of the drop-down menu, you’ll see something like “Bluetooth (1.7.14f14): On.” The funky number there is the version number for the Bluetooth software on your Mac.
But for even more nitty-gritty details, open the Bluetooth System Preferences panel. On the Bluetooth Device Name row, click on the name of your Mac. The display will change to a series of letters and numbers; this is the hardware address of the adapter. Click again, and you’ll see the software version, as above. Click once more and you’ll see the manufacturer’s name along with the firmware version. Click one last time, and the display will return to showing the name of your Mac.
Yes, all of this information is also available in the System Profiler (in /Applications -> Utilities), under the Hardware -> Bluetooth section. But where’s the fun in doing it that way?