12-Digits LC-Display Paper Size 58 mm (Outer Roll " Roll 57 mm") Printing Speed 20 Lines Sec 2 Color-Print (IR-40T) Power Source Batteries (4 x AA)AC Adaptor optional (AD-A 60024) Profit Calculation (Cost Sell Margin) Item Counter Mark Up Mark Downu 25E63-Digit Comma Markers After-Print-Function (Option to print a calculation after all operations (max 150 operation steps) are entered) Re-Print-Function (Option to print a calculation (max 150 operation steps) as often as desired)