1PACK Victor 1310 Big Print Commercial Thermal Printing Calculator, 10-12-Digit Fast and quiet thermal printing calculator features the biggest print on tape available. Choose between 12-digits for normal print size (Arial 11 point font) or 10-digits for Big Print™ (Arial 17 point font) which is 150% larger than standard printing calculators.Power Source : AC;Display Notation : Numeric;Number of Display Digits : 10, 12;Memory : 4-Key;Display Type : Two-Color Dot Matrix;Display Angle : Fixed;Display Characters Height : 15.0 mm;Percent Key : Yes;Fraction Calculations : Yes;Fraction/Decimal Conversions : No;Decimal Function : Yes; /- Switch Key : Yes;Currency Exchange Function : No;Metric Conversion : No;Backspace Key : Yes;Double Zero Key : Yes;Amortization : No;Base Number Calculations : No;Bond Calculations : No;Cash Flow Calculations : No;Complex Number Calculations : No;Confidence Interval Calculating : No;Hyperbolic Functions : No;Hypothesis Testing : No;Interest Rate Conversion : No;Item Count Function : Yes;Linear Regression : No;Loan Calculation : No;Logical (Boolean) Operations : No;Markup/Down Key : No;Matrices : No;Percent Add-On/Discount : No;Polar-Rectangular Conversion : No;Print Color : Black;Print Speed (Lines per Second) : 6.0;Probability (Random Number) : No;Simultaneous Equations : No;Square Root Key : Yes;Time/Date : Yes;Trig/Log Functions : No;Variable Regression : No;Variable Statistics : No;Size : 7 1/2 x 9 1/2;Replacement Batteries : AC Only;Replacement Roll Paper : UNV-35762; Thermal – 6 Lps – Date, Clock, Independent Memory – 10 Digits – Dot Matrix – Ac Supply Powered – 2.5″ X 7.8″ X 10″ – Multi – 1 Each