Product 1. 12-digit large-capacity display: This calculator has a 12-digit large-capacity display, which can display more calculation results and numbers, which is convenient for users to calculate and view large-capacity numbers.2. Silent design: The calculator adopts a silent design, there is no noise or noisy sound when the keys are operated, giving the user a quiet environment and will not disturb the people around.3. Powered by solar energy and wind energy: the calculator is powered by solar energy and wind energy. Through the built-in solar panel and wind power generation device, the two energy sources can be automatically converted and charged. This environmentally friendly energy-powered method can reduce the dependence on batteries and allow long-term use.4. Simple and convenient: This calculator is easy and convenient to operate, and users can quickly get started with it. The button layout is reasonable, and the button rebound is sensitive, which can improve the accuracy and efficiency of operation.5. Multi-function calculation: The calculator has a variety of functions, including basic four arithmetic operations, percentage calculation, reciprocal, square root, etc. Whether it is simple daily calculations or complex scientific calculations, it can meet the needs of users.6. Large key design: The calculator adopts a large key design with a large key area and clear and easy-to-read text, which is very suitable for long-term use and the elderly. The large button design can also reduce button errors and improve the convenience of use.7. Lightweight and Portable: This calculator is small and lightweight, easy to carry. Whether it is carried or put in a school bag, it does not take up a lot of space. Whether at school, on the go or in the office, use it anytime.8. Reliable and Durable: The calculator is made of high-quality materials and has a sturdy and durable structure. After strict quality control and testing, it can withstand long-term use and testing, ensuring its reliability and durability.To sum up, this 12-digit silent solar and wind calculator has several features. It has the characteristics of large-capacity display, silent design, solar and wind power supply, simplicity and convenience, multi-function computing, large key design, light and portable, reliable and durable. Whether in daily life or work, this calculator can provide users with a convenient, accurate and reliable computing experience.