The Calculator CASIO SL 1000 SC blue helps you solve simple arithmetic problems, which makes it ideal for both school and office work. You'll appreciate the basic functions - root and percent. The calculator also comes equipped financial functions such as vAT calculation and total sum. The advantage of this model is its solar power system with a battery backup, which brings down its energy consumption. The calculator comes equipped with a 2row display for 10 digits. You'll appreciate the protective case that shields the calculator against damage. The model's small size is suitable for travelling.