Twelve-Digit Desktop Calculator With Dual Solar Power And Battery,, Or Business. Product Details Are you tired of counting numbers with your brain? Do you find it inconvenient to calculate with your mobile phone or computer? A basic calculator is one of the necessary tools in people's daily work and life. In order to meet people's needs, it is necessary to choose a powerful calculator. This calculator will satisfy all your calculator needs. ?Two-way Power? - Solar (works only when it is bright) and Battery (included,long battery life.). Automatic shut-down, energy saving and environmental protection. ?Excellent design?This calculator features a unique typewriter style design that mimics the feel of a mechanical keyboard, with fast and accurate key response. The retro round big button keys provide a comfortable touch, making every calculation effortless and enjoyable. ?Large screen display?The calculator features a 12-digit large numeric display that can be placed flat on a desktop, countertop or table for easy use, and the 15-degree tilt screen optimizes the field of view and enhances stability and convenience. ?Versatile Purposes?This calculator is designed for many occasions: business, office, home, basic budgeting, school, and more. Use it to assist your personal finance or just a quick calculation session. ?Functionalities?- Add, subtract, multiply, divide, backspace, grand total, CE, %, M+/M-/MRC. The calculator will turn itself off after about 6 minutes of being idle. 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.