The Casio FX-85GTX Scientific Calculator in black is a handheld device with a regular-sized LCD display, perfect for school or office use. Powered by batteries, this unit is reliable and efficient for solving complex equations. Made by Casio, a trusted brand in calculators, this scientific calculator is a must-have for those in need of precise calculations on-the-go. With fast delivery available, this model (Casio FX-85GT) is a practical and dependable tool for various mathematical tasks.