The Casio Fx-82Es Plus Is A Scientific Calculator Suitable For Middle And High School Students, As Well As For General Scientific Calculations. It Features A Natural Textbook Display That Shows Mathematical Expressions Exactly As They Appear In Textbooks, Making It Easier To Understand And Verify Calculations. Product Specifications: Number Of Functions: 252 Display: 10-Digit Mantissa + 2-Digit Exponential Display Power Source: 1 Aaa Battery Dimensions: 16.1 X 8.1 X 1.6 Cm Weight: 105 G