About CASIO Scientific Calculator FX-991ESPLUS
The Casio scientific calculator FX-991 Es plus 2nd edition is perfect for engineering, polytechnic, and science students. The calculator comes with 3-years of surety (given by manufacture), and a warranty of 3 years if the product is genuine - with the exception of the warranty period for the first year of use, and the third year for use after purchase, with an additional warranty.