Calculator, Sharp El-310Wb, White 3.125, 3.38 X 4.75 X 1.0 Inches. Product Details Eight-digit, mini-desktop calculator features an extra-large LCD that displays crisp, clear digits to prevent reading errors. Durable keys are appropriately spaced for fast, accurate data entry. Backspace key allows you to make quick, single-digit corrections for time-saving use. Twin-power operation runs on solar energy with a battery backup to deliver consistent, reliable performance in any environment. Calculator also includes automatic tax keys, percent key, square root key, four-key independent memory and more. Professional calculator is perfect for business professionals at home or in the office. "Extra-large, angled LCD displays crisp digits to prevent reading errors" Durable keys are comfortably spaced for accurate data entry "Backspace key allows fast, simple corrections for time-saving use" "Twin-power operation ensures consistent, reliable use in any environment" "Also includes automatic tax keys, percent key and more" 3. 38" x 4. 75" x 1. 0" Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.