Fraction calculations Complex number Calculations 26 variable memories *Up to 2,372 extra variable memories Combination and permutation Base-n calculations/ conversions An Integrated hard case swings back a full 360 degrees 1 Year Warranty To avail warranty, please contact the service center mentioned in the warranty card. Two way power Natural Display (Natural Input/ Natural Output) / Basic like program functions (28,500 Bytes) / Data communication (LINK) / Multi-Replay FunctionMatrix Calculations / Sequence Calculations / Equation Calculations / Statistical Calculations / CALC/ SOLVE functions / Creating a number table / 128 Built-in Formulas / 40 Scientific Constants Fraction calculations Complex number Calculations 26 variable memories *Up to 2,372 extra variable memories Combination and permutation Base-n calculations/ conversions An Integrated hard case swings back a full 360 degrees Brand Casio SKU 101108628_NP-1021688488 Model FX-5800P