(DOES NOT TURN ON ) The Vintage 1980's Casio PT-10 Mini-Keyboard in cream is a collectible electronic keyboard with 29 keys and a built-in speaker. This midi keyboard from Casio is capable of synthesizer action and can be powered by batteries or an AC adapter. Manufactured in Japan in the 1980s, this Casio model is a rare piece for enthusiasts of vintage keyboards or for those looking for parts for repair. Its compact size and unique features make it a desirable addition to any collection of musical instruments.