• Non-Programmable Scientific Calculator with 240 Functions and 2-line Display. 2nd edition comes with same features and new sleek design with curved edges which makes it compact and easy to carry,Trigonometrical, Logarithmic, Permutation, Combination and many other mathematical Functions. Colour coded keypad for easy key differentiation ,Drop resistant body with water resistant printing on Keys. Works on one button cell. Comes with slide-on hard case