CANON LS-123K-MGR calculator Green Product Description Canon LS-123K - desktop calculator Product Type Desktop calculator - LCD - 12 digits Basic Functions Percent, sign change, constant calculation, backspace, double zero, Grand Total Scientific Functions Square root Financial Functions Tax calculation 3-Digit Punctuation Yes Angled Display Yes Power Source Solar panel, battery Colour Green metallic Features Auto power off, 4 memory buttons, non-slip rubber pads, key rollover, Calculation Command Sign