Casio FX 3650P II programmable calculator with 279 functions, 2 line display, battery/solar cell

large cursor keys for editing, very convenient menu navigation integral/differential calculus, 360 programming steps can be stored in up to 4 programs balancing memory and 8 constant memories, calculating with complex numbers S-V. P.A.M. (Super Visual Perfect Algebraic Method), SCI/FIX/ENG function, 24 bracket levels, box contents FX-3650PII, hard case Low battery performance can cause memory content to be damaged or completely lost. Always keep written records of all important data