12 Digits, 300 Steps Check and Correct CalculatorRecheck 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 errorOn Display Indication of Active Constant (K): Easier technique for repeat Calculation for +, -, ?, x . Benefits: reduces any chances of manual error in repeat calculations. E.g. Press [2] [X] [X] (K is shown on screen) to set ?Multiply by 2? as constant. Enter, 10, and keep pressing [=] to get 20, 40, 80, and so on.F-Cut Key to control number of digits display after decimal and rounding off numberDedicated GT key for Grand Total CalculationMark-Up: All the mark-up capabilities of an adding machine for simplified cost and profit calculationsIndian Comma Marker for easy reading of numbers in Lakh & Crore. Can be set to show numbers in Million & Billion also.Operation symbol on display (+, -. x, ?) indicates the status of operation you are currently performing. Dimensions (D x W x H): 178 x 111 x 24.9mm.Extra Large Display: Larger display makes more data easier to readKey Rollover: Key operations are stored in a buffer, so nothing is lost even during high-speed input. Two-Way Power (Solar + Battery): Solar powered when light is sufficient, battery powered when light is insufficient