Desktop Calculator, Portable, Length 6 5/8 in, Width 4 3/8 in, Depth 3/8 in, Display Digits 12, Display LCD, Display Dimensions 3/4 in H x 2 1/2 in W, 4-Key Independent Memory, Change Sign, Currency Conversion Functions, General Math, Tax/Cost/Sell/Margin Keys, General Calculations, Automatic Power Down, Double Zero/Grand Total Key/Backspace Bottoms, Power Supply Battery, Solar, Includes Batteries