This listing includes a lot of two (2) Casio scientific calculators: one fx-115ES PLUS and one fx-300MS (2nd edition). Both calculators are in good working condition, perfect for students, engineers, or anyone needing reliable scientific calculation tools. The fx-115ES PLUS features Natural V.P.A.M. display and two-way power (solar + battery), while the fx-300MS also offers solar and battery power with a standard S-V.P.A.M. interface. Both units have clear displays and responsive buttons, ready for immediate use. The fx-115ES PLUS includes its original hard slide case.