Bluetooth version on iMac

Question

How can I tell what Bluetooth version (i.e. 2.1 + EDR or 4.0) my iMac has installed? I downloaded Bluetooth Explorer and poked around, but I see no information that screams "Bluetooth version" at me. Nor could I find any data online mapping model numbers to Bluetooth versions.

I ask because I'm trying to do some work w/ 4.0 LE profiles. My Mac is an "iMac11,2".

Answer 1

System Profiler (apple > about this mac > more info > system report > hardware > bluetooth ) will tell you your "LMP version"

lookup that LMP version here http://www.bluetooth.org/Technical/AssignedNumbers/link_manager.htm

The key ones are:

LMP Version -> BT version

4 -> Bluetooth Core Specification 2.1 + EDR

6 -> Bluetooth Core Specification 4.0

Answer 2

1.  Click the  menu.
2.  Select About This Mac.
3.  Click on the More Info... button.
4.  Click on the System Report... button.
5.  Select Bluetooth from the sidebar on the left, underneath "Hardware."
6.  Scan down the list of information until you find "LMP Version."

If your Mac is equipped with Bluetooth 4.0, LMP Version will say 0x6. Anything lower than that is an older version of Bluetooth

Source: http://www.imore.com/how-tell-if-your-mac-has-bluetooth-40