DESCRIPTIONNewer Version of Casio 991 EX & 4-times better resolution than Casio 991ES Plus for easier viewing of long expressionsNatural Textbook Display- Input and display fractions, powers, logarithms, roots, and other mathematical formulas and symbol just as they appear in textbooksScientific Calculator with inbuilt QR Code function --Calculator can generate QR Code -- Useful from graphical visualization & accessing user manual using your smart phoneFaster than any previous Casio Non-Programmable Scientific CalculatorUp to Four Degree Simultaneous and Polynomial Solver, Numerical Integration, Differentiation, Statistics, Matrix, Vector Calculation SHIPPING International orders will be shipped by India Post International order will take 11-25 business days to deliver goods worldwideFor express shipping please write to us.If your product is undelivered with in specific time period, we would like to request you please write us once before opening, item not received case. So we can update you about the delivery. RETURN POLICYReturn will be accepted within 15 Days from the Date of Delivery to Buyer. Please write to us before opening any return case. So we can mutually resolve the case.If Any Tax Is Applicable At Buyers Country, Buyer Has To Pay All Such Taxes As Per Law. PAYMENT We Accept Payment Through eCRATER payments Methods. FEEDBACK Please spare a few minutes to submit your valuable feedback. Thanks