Sharp 10-digit professional desktop calculator with angled LCD, Cost-Sell-Margin keys, currency conversion, 4-key memory, and twin power operation. Highlights: Modern white design with large angled LCD display for clear viewing Cost/Sell/Margin keys for fast and easy profit margin calculations Currency conversion functions for global business use Backspace key for correcting entries 4-key independent memory for repeated calculations Automatic power-down to save energy Backed by a 1-year limited warranty The Sharp EL-330WB 10-Digit Professional Desktop Calculator combines functionality, style, and efficiency for business professionals at home or in the office. Its modern white design and large angled LCD display provide clear visibility, while durable plastic keys ensure comfortable and accurate input. Cost/Sell/Margin keys allow quick calculation of profit, cost, or selling price by entering two variables to automatically compute the third. Additional features include currency conversion functions, automatic tax keys, percent key, backspace key, 4-key independent memory, extra-large plus key, sign change, and automatic power-down. Operates on twin power (solar with battery backup) for reliable performance.