Cost/Sell/MarginCalculate the cost, selling price, or margin of profit on an item, given the other two values.
Two-way power (Solar + Battery)Solar 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.
