Meichoon Solar Battery Calculator Dual Power Large Standard Function Desktop Product Details Meichoon Large Desktop Calculator - with daily add, subtract, multiply, divide and backspace functions, suitable for home, office, school, retail store use. Large LCD display - 14 digits, better vision, upright LCD display, Auto power off if no operation. Dual Power Calculator - Solar power (works only when it is bright) and battery power (1 AA battery). Antiskid design - With anti-skid gasket, it's not easy to slide during operation. Perfect design - Based on human habits and comfortable for use, ergonomic button design. 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.