1. [ Black Calculators ] – This electronic desk calculator set includes 5 x Basic Calculator, 5 x AA battery, 1 x User Manual. Simple calculator is easy to read and useful for office, primary school, market, shop and home. 2. [ Safety Materials and Solar Battery Power ] – Our desk calculators are made of high quality material ABS. It has two-way power, making the calculator have a longer life for calculation. The solar-powered calculator can keep working even without a battery inside when there is bright light. 3. [ 12 Digits Large Display ] – 12 digits can handle most of the calculation problems in life and work. The desk calculator's large display is suitable for both men and women. The big button design conforms to human usage habits and is comfortable to touch. 4. [ Easy carry ] – Handheld desktop calculator, a four-function calculator simplifies basic calculations. It doesn't take up much desk space, but it's big enough to be comfortable to use. Start with accurate calculations and success will follow.