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Overhead calculator which emulates the Casio SL450...This four-function calculator displays the current operation sign & has a floating negative sign in its eight-digit display; With change sign, square root, percent and memory keys, this calculator is a fine choice for primary mathematics; Includes carrying case and instructions. Additional Info: Manufacturer: Casio MFG. Model #: OH450 UPC: 079767152758 Manufacturer's Warranty: 1 YEAR
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