The 48G II Graphing Calculator is ideal for classroom or lab work in engineering, surveying, math, science and statistics. Features 131 x 64 pixel display, 128KB total memory, more than 80K of user memory, huge built-in constant library and structured programming for creating applications. With more than 2,300 functions for surveyors, engineers, classroom and lab. Large screen with 2D and 3D graphing modes and serial and IrDA connectivity including cable and software. It has RPN, algebraic and textbook entry modes. Permitted for use on SAT I, SAT II Math IC/IIC, PSAT/NMSQT, AP Calculus, AP Physics and AP Chemistry. Powered by three included AAA batteries. Shuts off after five minutes of nonuse. Weighs 7.7 oz.