Ohm Denki calculator to an angle for easy for power tax calculation 12-digit (adjustable viewing/convenient business/2 supplies/with function/gray)

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Power supply: Double power method…Built-in solar cell, DC1.5V button battery (LR1130) x 1 Calculation functions: consumption tax calculation, four arithmetic calculations (addition, subtraction, multiplication and division), percentage calculation, constant calculation, memory calculation, percentage calculation, gross profit calculation, compound interest calculation, exponentiation calculation, square root calculation Number of calculation digits: 12 digits External dimensions: (approx.) Width 107 x Height 175.6 x Depth 23.8mm Weight: 155g (battery included)