12 digits. 3 Key memory. Large fixed angle display. Cost-sell-margin, mark-up and tax functions. Backspace correction. +/- Change sign. Currency conversion. Durable metal fascia. Auto on when you press any key. Durable metal fascia and hard keys. Rubber feet. Auto off. Solar/battery powered: LR54. WxDxH: 101x150x23mm.Aurora 12 Digit Semi Desktop Calculator Grey - DT661
