Display: TwinLine Natural Textbook display, LCD dot matrix, 10+2 Digit Memory Keys: 9 Square Root Backspace correction key Features include: Combinations, Coordinate conversion, Degrees, Degrees/minutes/seconds, Exponential regression, Exponents, Expression editing, Factorials, FIX/SCI/NORM, Fractions, Gradians, Hyperbolics, Inverse regression, Linear regression, Logarithm, Logarithmic regression, Negative Indicator, Permutations, Power regression, Quadratic regression, Radians, Random numbers, Reciprocals, Roots & powers, Standard deviation, Table of a function, Trigonometrics (SIN/COS/TAN) Multi-replay Auto power off Slide on hard case Power Supply: Solar and LR44 Battery (Battery not supplied) WxDxH: 80x161x13.7mm Weight: 110g