The Casio MX-8B is a dual-power desk calculator with a wide 8-digit display. It features large, easy-to-read buttons including number, positive/negative and percentage keys, standard memory and memory recall functions, and an extra-large +/addition key. The calculator is both battery and solar powered and weighs just 300 grams. It features a sleek, white design and is compact enough to store easily or carry wherever you go.