Easy calculations of cost selling price and margin. Optimum usability and design features for business users. Usability. Extra large display with easy-to read numbers. Outstanding visibility supports error-free accurate calculation work. Key layout and shape designed for ease of input. Intuitive key layout and key shape that varies from row to row to allow for differences in finger movement. Comfortable key touch that doesn't tire your fingers (Desktop Type). Shock absorbing structure is installed inside each key to create a cushion. Comfortable design allows prolonged use without getting tired owing to two-step touch configuration. Easy to operate round form and panel molding. Round shape body that also slightly bulges on the back produces a comfortable feeling when taken in hand.