Casio FX-CASE-CB-BK2 case for calculator features a protective case for calculators up to 8.0 x 16.5 x 2.3 cm. It is a rugged case with the Casio logo and has a soft inner material for ideal protection. The case provides protection against scratches, dust, and shocks, and includes space for accessories such as pens, an eraser, and a ruler.