This 12-digit thermal printing calculator features an extra large backlit LCD display for easy viewing. Large Print Mode allows you to print with text fifty percent bigger than normal printing calculator font size (10-digit limit). You can count on the super fast & quiet 8.0 lines-per-second thermal printer. An accessible paper-loading compartment at the top of the calculator makes changing rolls simpler: no more narrow paper feed slot hassle. Featuring a full-size keyboard with greater spacing between keys. Cost-sell-margin keys make for quick & easy profit margin calculations. Power Source(s): AC; Display Notation: Numeric; Number of Display Digits: 12; Display Characters x Display Lines: 12 x 1.