More on Amazon.com : http://www.amazon.com/gp/product/B001A4DTQ2?tag=thefatkidin06-20 <br /> <br />HP F2229AA 50g Graphing Calculator <br /> <br />Ultimate graphing calculator for surveying engineering math and science professionals and students <br />2300 built-in functions <br />Powerful SD card slot allows you to format your card right in the calculator and expand memory <br />Choose RPN textbook or algebraic entry and customize data with four font sizes and styles <br />Enhanced HP keypad with redefinable keyboard and menu keys for reduced keying errors <br />Calculates advanced expressions and view solutions in 2-D or 3-D graphical representation on high-contrast display
