Sharp EL-1801C 12-Digit 2-Color Semi-Desktop Portable Large Electronic Printing Calculator.Sharp Model Number: EL-1801CFeatures:• Large 12-digit LCD screen• 2-color printing at 2.1 lines per second• Tax key for easy tax calculations• 4-key memory• Uses 4 AA Batteries for power• No power cord required, but can still be used (AC: 6V/300mA)• Can be used as a portable calculator and a desktop calculator• Large keys for easy and clear typing