Product details of Casio Calculator Mini Desktop Type Calculator MS-120FM Pink With Free 2pcs Ball Pen Mini Desk 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. 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. Dimensions (D × W × H) : 148.5×101×27.6mm Weight : 120g