Two-way Power (Solar + Battery) Solar Powered When Light Is Sufficient, Battery Powered When Light Is Insufficient. Plastic Keys Designed And Engineered For Easy Operation. Natural V.P.A.M. Display Display Expression Same As Textbook. List Based STAT-data Editor Viewing And Editing Of Input Data In List Format, Showing Data Groups (x-data, Y-data, Frequency) And Surrounding Data. Multi-replay Quick And Easy Recall Of Previously Executed Formulas For Editing And Re-execution. 10 + 2 Digits 10-digit Mantissa + 2-digit Exponential Display. Dot Matrix Display High-resolution Screen Provides Beautiful Looking Graphs Every Time. Back To Standard Scientific Calculators Features New Functions New Equation Mode Random Integers Standard Functions Fraction Calculations Combination And Permutation Statistics (List-based STAT Data Editor, Standard Deviation, Regression Analysis) 9 Variables Table Function Comes With New Slide-on Hard Case fx-82ES PLUS/85ES PLUS/350ES PLUS Functions, In Addition To: Equation Calculations Integration/differential Calculations Matrix Calculations Vector Calculations Complex Number Calculations CALC Function SOLVE Function Base-n Calculation Integration Complex Number Calculations Complex Number Calculations Differential Vector Matrix Operations Matrix Operations Fraction Calculations Product Dimension:11.1(H) X 80(W) X 162(D)Mm