Aidi Beautiful red  accordion with 31 buttons on the right hand with a different note push and pull to give an extended range and 12 bass buttons.  Supplied with plan of bass buttons to get you started right away.  This is a very nice red colour and absolutely brand new.  It is tuned to the keys G, C and F.  Play within that row and you play that key.  Switch to another row and use the same fingering to play the same tune in a different key.  Some other keys possible by playing between rows.