A powerful desktop calculator with a 12-digit LCD that offers reliable performance. Use the 120-step check and correct function to review your calculations through up to 120 steps and make any necessary corrections. Rubber keypad is color-coded and easy to use for extended periods of time. Four-function memory is great for tedious calculations, such as square roots or long division. Using both solar and battery power, this calculator will work anywhere you are. Desktop calculator also features percentage key, decimal key and rounding key.