Casio 1-year-old official warranty
Original product.

Main feature:
- 417 functions.
- full dot display.
- natural display (can count as in textbook)
- plastic button.
- integration / differential
- equation calculation.
- vector calculation matrix.
- complex numbers calculating.
- calc function / answer function
- n-based calculations.
- fractional calculations.
- combination and permutation.
- algorithm log.
- list-based data editor stat.
- standard deviation.
Paired-variable statistics regression analysis
- operation logic (right or wrong conditions)
- table function
- 40 formula constants
- 40 matrix conversion (20 pair conversion)
- 9 different m