The Casio fx-300ES PLUS-BU 2nd Edition Scientific Calculator in Blue is a versatile handheld calculator designed for various mathematical tasks. With a regular key size and display, this calculator offers basic, financial, and scientific functions. It is powered by both solar energy and batteries, making it convenient for use in any environment. The LCD display, backlight, and calculus feature enhance the functionality of this model from Casio, ensuring accurate and efficient calculations for everyday office tasks.