High School Scientific Calculators,10-Digit Digital Math Calculator For Middle Product Details ??MULTI-FUNCTIONALITY??: The multi-functional scientific calculator combines the functions of a calculator, notebook, and pen, making it ideal for middle school, high school. Its paperless design is environmentally friendly and improves learning and work efficiency. ??LIGHTWEIGHT AND PORTABLE??: The scientific calculator is designed to be easy to carry with you. It can be put in your bag, pocket, or even wallet. It is perfect for use on the go, such as during travel or in the classroom. Its lightweight design is achieved through the use of lightweight materials. ??LARGE DISPLAY SCREEN??: The scientific calculator is equipped with a large LCD display screen, providing a more intuitive and clear display of calculation results, making it easier for users to read and operate numbers and symbols, reducing the possibility of input errors and improving calculation accuracy. ??SOLAR-POWERED SCIENTIFIC CALCULATOR??: The scientific calculator can work with either solar power or batteries, making it convenient for users to use in different environments.with functions such as addition, subtraction, multiplication, division, algebra, trigonometric functions, and calculus. Whether in middle school, high school, or college math studies, this calculator can assist in calculations and help students better understand mathematical concepts. ??BEST GIFT??: The multi-purpose calculadora cientifica is a very practical tool suitable for various occasions, including office calculations, construction calculations, financial calculations, etc. It is easy to use and suitable for various types of users such as students, teachers, and business people. It is also an school supplies for back-to-school, making it the best gift for students. 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.