Water-Resistant Calculator, Portable, Length 6 1/2 in, Width 4 1/4 in, Depth 2 in, Display Digits 12, Display LCD, Display Dimensions 1 in H x 3 3/4 in W, 3-Key Memory, Backspace Key, Change Sign Key, Grand Total, Square Root, Tax, Washable, General Calculations, Water and Shock Resistant, Power Supply Battery, Solar