Desktop Type 16 digits Regular percentRegular percentage calculations. Tax calculationAutomatic calculation of price plus tax, price less tax, discount, selling price, tax amount, discount amount, and margin amount. Solar & BatterySolar powered when light is sufficient, battery powered when light is insufficient. Rounding selectorF: Floating decimals. CUT: Values are cut off. UP: Values are rounded up. 5/4: Values are rounded off. Decimal selector4,3,2,1,0 : Specifies the number of decimal places as 4,3,2,1,0. ADD2: 2 decimal places are assumed for entries and results of all addition and subtraction operations. Key rolloverKey operations are stored in a buffer, so nothing is lost even during high-speed input. Extra Large displayLarger display makes more data easier to read. Plastic keysDesigned and engineered for easy operation. Metal FaceplateTough cover stands up to rough treatment.