Cassotto system chromatic accordion, with option of B or C system. It offers 77 buttons on the right keyboard, 44 notes, 120 basses, and handmade reeds. Includes 4 sets of reeds and 5 choirs (4’-8’-8’-16’ H-M-M-L or 8’-8’-8’-16’ M-M-M-L). It has 11+M treble registers and 5 bass registers. Dimensions: 41.5 cm high, 43.5 cm wide, 19.5 cm deep. Weight: 10.8 kg.