JBL Stereo and Bluetooth in a Prius I

Hello all,

I have been in the market for a used Prius and recently test drove a 2011 Prius I. This Prius does have the JBL Stereo and Bluetooth like a couple of the Prius III's I have driven. The salesman (not a Toyota dealer) stated these were upgrades on the Prius I. From my limited knowledge, I think it is a Prius III and he is mistaken.

Can anyone clarify whether a Prius I can be upgraded to JBL and Bluetooth? Is this actually a Prius III?

Thanks in advance!