VINTAGE CASIO DIGITAL DIARY SF-4000, Made in Japan. | eBay
Old Organizers Collection - Casio SF-4000
Found this old gem today... Vintage Casio SF-4000 'digital diary' from 1988. Featuring a whole 31,902 characters of battery backed storage. : r/retrobattlestations
The Casio SF-4000 ($109.95) is a "digital diary" with a large, six-line LCD screen that displays any full month… | Digital diary, Graphing calculator, Square roots
Casio SF-4000
Casio - SF-3500 - - Digital Diary - Casio SF3500 - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA
Casio SF-4000, Digital Diary w/Instruction Manual, Vintage, Brand New,NIB, Japan | #3789118170
1988 Casio Digital Diary by CetaceanLover23 -- Fur Affinity [dot] net