Casio FX991EX Classwiz Scientific Calculator for sale online | eBay
File:Casio fx-991EX.jpg - Wikimedia Commons
Casio FX991EX: ClassWiz FX-991EX Scientific Calculator – Icon Menu Display, Textbook Display, Slide-on Hard Case, Spreadsheet, Natural-VPAM – Solar, Battery Powered – 3" x 6.5" x 0.4" – 1 Each
Got ahold of a Casio fx-991ex and CG-50 to match my Classpad II. I'm really impressed with them but there is something about the fx-991ex... (see comments) : r/calculators
Casio FX-991EX Advanced Scientific Calculator, High Resolution Screen, Black - Walmart.com
Casio FX-991EX Classwiz Scientific Graphing Calculator With Cover White | eBay