New Solar Electronic Calculator 12 Digits-AA-3866-12S

12 bitsRegular Percent - Regular percent calculation.Bi-directional power supply (solar + battery) - powered by solar power when there is sufficient light, and battery power when there is insufficient light.Key Rollover - Key operations are stored in a buffer, so nothing is lost even during high-speed typing.Extra Large Display - A larger display makes more data easier to read.Plastic Keys - Designed and manufactured for ease of operation.Marking - All marking functions of the adding machine to simplify cost and profit calculations.