Comix Desktop Calculator With Solar Battery Dual Power, 12-Digit Large Lcd Product Details LARGE COMPUTER KEY: Computer button design, comfortable to touch, clear sound, after 100 thousand times of tapping test, not easy to bond. Suitable for fast calculations. GREAT BIG LCD DISPLAY: Displays up to 12 - bit bold digits?the 30large display is more clear than a horizontal display, for easy and accurate screen reading 4 ANTI-SLIP MAT: Keep stable on the desktop and help for fast press and calculations Size: 190*154*43mm; Number: 12 GREAT FOR HOME AND OFFICE - Handheld calculator, easy to carry and perfect for office, school, or home use. 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.