The Calculator CASIO SL 1000 SC grey can solve simple arithmetic problems, which makes it ideal for both students and businessmen. 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. This calculator features a 2row display for 10 digits. Moreover, this model includes a protective case that safely covers the calculator against scratches. The calculator's small size makes it the perfect choice for travelling.