CANON TX-1210E calculator tax- and currency calculation big bended keyboard big bended display Product Description Canon TX-1210E - pocket calculator Product Type Pocket calculator - LCD - 12 digits Basic Functions Percent, sign change, Grand Total, addition, subtraction, multiplication, division, shift Scientific Functions Decimal switch, rounding switch, square root Financial Functions Currency conversion, tax calculation, mark-up 3-Digit Punctuation Yes Angled Display Yes Power Source Solar panel, battery Colour Black Features Auto power off, 3 memory buttons, key rollover, 1 memory register