CASIO Fx-991MS 2nd Edition

Design Simple and easy to use
Optimal education tools realized through a design that emphasizes comfort in the hand, legibility, and usability through the pursuit of simplicity

More comfortable in the hand!
A rounded design that fits naturally in the hand and a slim body that’s comfortable to hold

Attachable and detachable in any direction!
Hard case that’s attachable and detachable in any direction for greater ease of use

More legible!
The frequently used number keys have been enlarged, and the keys are printed in an easy-to-read font.
Easier to use!
Highly visible, easy-to-press cursor keys and function keys