Review: First Databank Casio CD-401 calculator watch - YouTube
Banco de datos de Casio HistoriayFuturo
Casio Databank CD-40: The Original Smart Watch
Ghosts of Christmas Past: Ten tech treats from yesteryear • The Register
Casio Data Bank CD-401 Casio Data Bank 2203 M | eBay
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Eyad Abu Awad Twitter पर: "Casio Databank CD-40 was released in 1984. It was the first real smart watch. @Casio_USA #Casio #Smartwatch https://t.co/7668YG11JI" / Twitter
Vintage Casio DBC-62 Databank/ Reloj de hombre usado Japón/ - Etsy España
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Casio Data Bank CD-401 Casio Data Bank 2203 M | eBay
Rare Vintage 80's Casio DBC-610 Data Bank Digital - Etsy España