Optional Mains adaptor not included (available separately). 12 Digits. 4 Key memory. Euro/currency conversion. Tax and Cost-Sell-Margin functions. Decimal selector: 0, 2, 3, Add, 2, F. Sub total and Grand total. Round up/down key. Mark up/down key. Item count. 2.4 lines/second. Red/black ink roller printing. Roll size: 57x57mm. Mains/battery powered: AA x4 (adaptor sold separately). WxDxH: 199x249x72mm.