Scientific Calculator Counter 401 Functions Matrix Dot Vector Equation Calculate Solar and Battery Dual Powered 2 Line Display Business Office Middle High School Student SAT/AP Test Calculate

Features:
2 lines display, 10 + 2 digits, show formula and result clearly.
Dual power source, solar and built-in battery, energy saving and convenient.
With 401 functions, covering General Calculation (fraction/percent/time/multi-statements/engineering notation), Function Calculation, Complex Number Calculation(CMPLX), CALC, SOLVE, Statistic Calculation (SD, REG), Base Calculation(BASE), Equation Calculation(EQN), Matrix Calculation(MAT), Vector Calculations(VTC), Scientific Constants, Metric Conversion.
With multi-replay(up/down/right/left), DEL and M+ keys, represent/correct formula or store result easily.
Handheld design, with a removable protector, easy to use and store.
Ideal helper for middle/high school students and Maths researcher.
Comes with detailed user manual to introduce the calculator function and steps. Please read it carefully.