Sharp EL-330WB Desktop Calculator, 10-Digit LCD

10 digit professional desktop calculator is perfect for business professionals at home or in the office. The EL-330WB is finished in a modern white design and features a large angled LCD display and durable plastic keys. Cost/sell/margin keys make for quick and easy profit margin calculations (simply enter two variables and the third automatically appears).Other functions 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/battery backup). Large 10 digit angled LCD display; Modern white finish; Cost/sell/margin keys; Conversion function; Automatic tax keys; Cost/sell/margin keys make for quick and easy profit margin calculations; Perfect for business professionals at home or in the office; Operates on twin power (solar/battery backup).; Specifications Display: LCD; Display Digits: 10; Digit Size: 18 mm; Display Angle: Angled; 3 Digit Punctuation: Yes; Memory: 4 Key; Percent Key: Yes; Constant calculation: Yes; Sign Change: Yes; Auto Power Off: Yes; Backspace Key: Yes; Cost/Sell/Margin Keys: Yes; Double Zero Key: Yes; Conversion Function: Yes; Battery Type: LR44 x 1.;