The Texas Instruments TI-30XIIS Scientific Calculator combines statistics and advanced scientific functions and is a durable calculator for the classroom. The two-line display of this grey, Solar Scientific Calculator displays up to 11 characters and helps students explore a variety of math and science concepts in the classroom. Other features of the Texas Instruments Scientific Calculator include fraction/decimal conversions, trigonometric functions in degrees and radians, common natural logarithms, factorials universal power and roots and much more. Be prepared for a wide variety of mathematical and scientific functions with this multi-functional, Texas Instruments TI-30XIIS Scientific Calculator.Texas Instruments TI-30XIIS Solar Scientific Calculator: 2 display lines, displaying 11 characters LCD display Trigonometric functions in degrees and radians Fraction/decimal conversions Common natural logarithms Reciprocals Factorials Universal Powers and Roots Polar/rectangular conversions 2-variable statistics: enter, delete, insert, edit Hyperbolic Power Source: Solar and battery Also available in Pink or Blue