The OEM Sharp 12-Digit Calculator SHREL1801V features a large, blue fluorescent display and a metal paper arm. It prints at a speed of 2.1 lines per second with a 2-color serial printer. This calculator includes essential functions such as clock, calendar, cost/sell/margin, and a Change Calculation mode that allows it to operate like a cash register. Additional features include 4-key memory, floating or fixed decimal options, item counter, tax keys, grand total, and average keys. It operates on AC/DC power and comes with an AC adapter.