Casio’s latest entrant, the HL-815L Basic calculator truly serves its purpose by letting you obtain solutions for all your mathematical and arithmetic problems that are too tedious to be done on paper. Requiring just 1 AA battery in order to function, this calculator is super compact with its noteworthy dimensions and can conveniently be stored in your pocket.

Moreover, this calculator offers a large and legible display for easy viewing by users. Besides letting you perform rudimentary calculations, the HL-815L Basic lets you determine regular percent for regular percentage calculation.