12 digitsRegular percentRegular percentage calculations.150 steps checkDisplays up to 150 previous calculation steps.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.Localized number displayDisplays numbers in four digit separator formats(Type A, Type B, Type C and Indian).