Go to upper left hand corner Apple menu and click on About this Mac.

Click on "More info"

See model "name" and model "identifier".
Lots more info in here too.
This app resides in your utilities folder.

"If it turns out that President Barack Obama can make a deal with the most intransigent, hard-line, unreasonable, totalitarian mullahs in the world but not with Republicans? Maybe he’s not the problem."