Calculator Casio DM-1400B

Extra Large display: Larger display makes more data easier to read. Two-way power (Solar + Battery): Solar powered when light is sufficient, battery powered when light is insufficient. Key rollover: Key operations are stored in a buffer, so nothing is lost even during high-speed input. Plastic keys: Designed and engineered for easy operation. Durable metal Faceplate: Tough cover stands up to rough treatment. Tax calculation: Automatic calculation of price plus tax, price less tax, discount, selling price, tax amount, discount amount, and margin amount. Regular percent: Regular percentage calculations.