The Casio 2-Way Power Calculators SL-300SV & MS-80S are a pair of basic calculators with different display sizes and key sizes. They run on solar power as well as battery power, making them convenient for use in any situation. These pocket and desktop calculators have LCD displays, making them easy to read and navigate. With the Casio brand known for their reliability and durability, these calculators from the early 2010s are a practical and efficient choice for office and business use. My father used these until his eyes got too bad, then they went into storage. They are clean, and function perfectly.
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