Casio 991ex calculator (fake

The 991EX Scientific Calculator is the most powerful scientific calculator on the market today. It has 552 functions, including statistics and probability, financial, physical constants and conversions. You can even graph your data with this device! And it’s solar-powered so you don’t have to worry about batteries ever again. Plus it comes with a slide-on hard case that protects your investment from drops or other accidents.

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