There are two types of packaging these come in but they are both Casio FX 300MS 2nd edition

CASIO FX-300MS PLUS 2nd Edition Scientific Calculator, a reliable tool for all your mathematical needs. This calculator, made by the trusted brand Casio, is a handheld device with a regular sized display and runs on battery power. It is perfect for office and industrial use, as well as for students and professionals who require a precision calculator.