Digit: 12 digitsRegular Percent: Regular percentage calculationsRecheck Function: The recheck function allows confirmation of errors by sound when checking calculations – if the user presses an incorrect key when performing a second calculation to check calculation results, a buzzer sounds to alert the user of the errorTwo-Way Power (Solar + Battery): Solar powered when light is sufficient, battery powered when light is insufficientFunction Command Signs: A symbol (+, -, x, ?) on the display indicates the status of operation you are currently performingKey Rollover: Key operations are stored in a buffer, so nothing is lost even during high-speed inputExtra Large Display: Larger display makes more data easier to readPlastic Keys: Designed and engineered for easy operation. Dimensions (D x W x H): 192 x 144 x 34.6mm.300 Steps Check: Displays up to 300 previous calculation steps. Mark-Up: All the mark-up capabilities of an adding machine for simplified cost and profit calculations.Localized Number Display: Displays numbers in four digit separator formats (Type A, Type B, Type C and Indian)