The Casio FX-115ESPlus scientific calculator is the most advanced solar-plus-battery scientific calculator that provides long life and dependability. With its Natural Textbook Display in addition to advance Statistics Matrix and Conversion functionality the FX-115ESPlus is a perfect choice for high school and college students. This calculator has 40 metric conversions/40 scientific constants comes with slide-on hard case. 2-line natural textbook display shows formula and results exactly as they appear in the textbook and displays formulas and results simultaneously for 417 built-in functions. Numeric Integration/Differentiation Simultaneous and Polynomial solver. Fraction calculations fraction/decimal conversions simplifying fractions and roots recurring decimal display remainder calculation integer division with remainder. Recommended for students taking General Math Pre-Algebra Algebra I and II Geometry Trigonometry Statistics Calculus Chemistry Engineering. Determine figures for complex equations with this Casio FX-115ESPlus advanced scientific calculator. This calculator comes with a protective slide-on case to protect it from damage. The FX-115ESPLUS Scientific Calculator comes with a one year manufacturer’s warranty. It is silver in color.