Classic Organ Casiotone 201, very large size, working and in excellent condition, guaranteed.. It is the first musical keyboard released by Casio in 1980. Specifications, key features, and device type: Classic analog/digital electronic keyboard, number of keys: 49 keys (4 octaves). Built-in sounds: Contains 29 different sounds including piano, organ, strings, woodwinds, and brass instruments. Exterior: Features an elegant wooden design integrated into a padded velvet hard carrying case for protection.