The Carlo Robelli keyboard is a portable keyboard. It has 61 keys which is standard keyboard size. The CK60 keyboard features 20 different style of voices with a choice of Fingered or Single Finger modes. The Carlo Robelli keyboard also has 8 demo songs and 5 percussion pads. The keyboard also features headphones,volume,and tempo control. It is used by battery power or you can also connect the adapter to use.