"Now, you can bid goodbye to those long hours of manual calculations with the help of this Chrome's 10 digit two line display scientific calculator which will help you in all your mathematical calculations. Slide-on Hard Case There is a hard case which can be sided for ease of use and protection from external damages such as scratches. 2 Line Display: The two line display makes it possible to view both the calculations formula and its result at the same time. The upper line shows the calculation formula and lower line shows the result. Fraction Calculations: You can easily and effortlessly perform various fraction problems including improper fractions, whole numbers and mixed numbers. Multi-replay Function: The multi-replay feature gives you a quick access to recall and edit previously entered formulas or equations. You can use the calculation result that is currently on the display as the first value for your next calculation. Note that pressing an operator key while a result is displayed causes the displayed value to change to answer, indicating it is the value that is currently stored in Answer Memory. Handy and useful, this calculator helps you to easily perform and solve various mathematical calculations including trigonometry, statistics, hyperbolic function and percentage. The memory area used for calculation input can hold 79 steps. Every time you perform a calculation, the replay function stores the calculation formula and it result in replay memory. You can use the display set up screen to specify the symbols you want for the decimal point and 3 digit separators. You can perform vigesimal calculations using degrees (hours), minutes and seconds and convert between vigesimal and decimal values."