This is a vintage Casio RO-551 Rom Pack designed for an electronic keyboard. The pack contains sound media for 4 songs and is made of plastic. It is a collectible item manufactured in Japan by Casio. The specific model and brand are Casio RO-551, known for providing additional songs and sounds for electronic keyboards. This Rom Pack is a valuable accessory for keyboard enthusiasts looking to expand their musical repertoire with unique sounds from the past.
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