Canon Calculator WS-1210T HB 12 digits display, extra large LCD, Adjustable tilting display, 3 digit comma separator, 102 x 23 mm screen size, 16.69 x 6.71 mm display character size Tax Function, Decimal Selector: +4320F, Rounding: Round up/off/down Grand Total: Yes Backspace key Percentage: Percentage add-on/discount Large Key Mark Printing: Yes, O Key(s): "0","00", Keytops: Plastic, IT touch, Reverse (RV) Key: Yes, Shift key: Yes, Square Root: Yes, GT Key: Yes, Sign Change Key: Yes Mark-up or Mark-down: Mark up