Panda Bluetooth - retrofit ?

Now that a bluetooth phone integration is an option ( was on Alessi and is on 100hp) does anyone have any info on it and/or a link to the operating instructions ...

... I assumed the radios (in standard cars vs bluetooth cars) are the same and the bluetooth is just in a separate module but maybe it's built into the radio just like the mp3 function ( I know the standard radio will accept telephone mute / speaker inputs etc ) ...
...so does anyone know ?...Just I'm thinking if it's a separate option ( like nokia /parrot bluetooth etc) then presumably it's available as a part to fit. ..and if so maybe thats the way to add handsfree ....

Thanks

I asked my dealer, he said £300 including fitting.