Desktop Type 12 digits Tax calculationAutomatic calculation of price plus tax, price less tax, discount, selling price, tax amount, discount amount, and margin amount. Cost/Sell/MarginCalculate the cost, selling price, or margin of profit on an item, given the other two values. Solar & BatterySolar powered when light is sufficient, battery powered when light is insufficient. Function command signsA symbol (+, -, ×, ÷) on the display indicates the status of operation you are currently performing. 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. Profit margin percent” % ” key gives quick access to prices and profits, and also delivers add-ons, discounts, ratios and increase/decrease values. Metal FaceplateTough cover stands up to rough treatment.