The CASIO fx-CG 10 Graphing Calculator is a handheld device powered by 4 AAA batteries, featuring a regular key size and graphing capabilities. This model from Casio, known as the PRIZM fx-CG10, is designed for office and industrial use, providing precise calculations and graphing functions for various applications. With its user-friendly interface and reliable power source, this graphing calculator is an essential tool for professionals and students alike.