The Aurora DT661 is a premium quality semi-desk calculator with a large angled 12 digit LCD display. The calculator was designed with durability and ease of use in mind, features include; a front case made from metal, large keys made from durable hard plastic and rubber feet for desk stability.Business functions include; Cost-Sell-Margin keys for profit calculations, Tax keys ideal for VAT calculations and programmable Currency Conversion keys. The patented Direct Number Input feature means that this calculator turns on when any key is pressed, this key stroke will also register. The DT661 is a premium quality executive product with a host of useful business functions.