CASIO fx-991N
Find-it on ebay.com -
 
Previous topic 

Date of acquisition: 2018/04/03
From: 

 Solar power
 10 digits - 98 functionsWatch model : fx-570C
Watch model : fx-570A

Box
LibraryManual
 Same manual as :

 Casio fx-570A

 Casio fx-570C