History of Casio DBC, DBX, and DBM Data Bank Calculator Watches | WatchUSeek Watch Forums
Vintage Casio DBC-610 Data Bank Telememo Schedule Digital Watch Korea DK 1980s | eBay
Casio Databank 150
Casio Databank - Wikipedia
Casio DBC-60. Note the button with a key symbol on it. It allows for password protecting your contacts. It is discontinued. | Casio, Timex watches, Casio watch
History of Casio DBC, DBX, and DBM Data Bank Calculator Watches | WatchUSeek Watch Forums