Extra Large display\nLarger display makes more data easier to read.\n\nTwo-way power (Solar + Battery)\nSolar powered when light is sufficient, battery powered when light is insufficient.\n\nKey rollover\nKey operations are stored in a buffer, so nothing is lost even during high-speed input.\n\nPlastic keys\nDesigned and engineered for easy operation.\n\nCost/Sell/Margin\nCalculate the cost, selling price, or margin of profit on an item, given the other two values.\n\nTax calculation\nAutomatic calculation of price plus tax, price less tax, discount, selling price, tax amount, discount amount, and margin amount.\n\nProfit margin percent\n" % " key gives quick access to prices and profits, and also delivers add-ons, discounts, ratios and increase/decrease values.\n\nFunction command signs\nA symbol (+, -, ×, ÷) on the display indicates the status of operation you are currently performing.