This Casio scientific calculator is a reliable and efficient tool for students and professionals alike. With a large LCD display, it is easy to read and operate, while the solar and battery power source ensure long-lasting use. The calculator is handheld and portable, making it ideal for use on-the-go. The Casio fx-85GTX model is a popular choice for key stage 3/4 students and office equipment users. It is perfect for solving complex equations and displaying your workings. Whether you are a scientist, mathematician, or accountant, this calculator is sure to meet your needs.