The 1980's Vintage Rare Casio SF-3500 Digital Diary Organizer is a sought-after collectible item that is still sealed in its original box. This digital diary organizer from Casio features a charcoal grey design and comes with various features such as a calendar, secret- add a password, letter memory, telephone directory, and memo capabilities. Made in Japan, this PDA is a rare find for collectors and enthusiasts of vintage electronics.
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