This 12-digit desktop printing calculator with large, fluorescent, fully punctuated display. Fast 2.7 lines per second two-color printer. Modern case design with built-in metal paper arm. Cost-sell-margin keys allow you to quickly & easily solve Csm problems by entering two variables & the third appears & prints. Displays & prints current time / date. Features grand total key, tax +/- keys, percent key, change sign (+/-) key, date / non-add key, backspace key, item count & automatic constants.