For those in need of a reliable scientific calculator, this Casio FX-7700GB is a great choice. With its regular key size and display, it is easy to use and read. It is a vintage calculator that can be used as spares or repair. The calculator is powered by battery and is a handheld size making it easy to carry around. It has an LCD display and features that make it a great choice for business, office and industrial use. Put new batteries in and won't turn on.
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