![Casio - SF-6700SY PLUS - - Digital Diary - Casio SF6700SY PLUS - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA Casio - SF-6700SY PLUS - - Digital Diary - Casio SF6700SY PLUS - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA](https://casio.ledudu.com/images/calculs/casio/machines/zoom/SF6700SY.jpg)
Casio - SF-6700SY PLUS - - Digital Diary - Casio SF6700SY PLUS - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA
![Casio - SF-6500SY - - Digital Diary - Casio SF6500SY - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA Casio - SF-6500SY - - Digital Diary - Casio SF6500SY - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA](https://casio.ledudu.com/images/calculs/casio/machines/zoom/SF6500SY.jpg)
Casio - SF-6500SY - - Digital Diary - Casio SF6500SY - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA
![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 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](https://preview.redd.it/ffx7e5b5p2h81.jpg?auto=webp&s=756f7eeeff67f3f479c0c26f55e3155ac5a7dcf1)
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
![Casio - SF-8000 - - Digital Diary - Casio SF8000 - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA Casio - SF-8000 - - Digital Diary - Casio SF8000 - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA](https://casio.ledudu.com/images/calculs/casio/machines/zoom/SF8000.jpg)