suitable for 991EX Scientific Calculator Digital Large Display 696 Functions for Middle High College Solar Scien-FO SHAN RAN WANG 1. Effortless Complex Calculations: The scientific calculator enables you to easily solve the most complex math problems, equations, and scientific formulas, making it an essential tool for students and professionals alike. 2. Dual Power Source: This portable school mini calculatrice features a dual power system with a built-in solar cell for extended use without batteries, and a battery backup for weeks of reliable performance. 3. Versatile Use: The multifunctional calculator is perfect for practicing a wide range of math problems, from GCSE and A-level exams to higher-level studies, ensuring you are well-prepared for any challenge. 4. Comprehensive Functionality: With just a few steps, this multi-purpose portable student calculator can handle complex calculations, integrals, and logarithms, providing a powerful solution for all your mathematical needs. 5. Advanced Features: The scientific vector test calculator is designed with advanced functionalities to support vector calculations and scientific testing, making it a versatile and indispensable tool for students and professionals. Note:Different factory batches may have slight differences in appearance, which not affect the use. Colour:Black Material:Plastic Package Contents: 1 * Scientific Calculator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Please pay attention to the title and description when buying, and pay attention to the title and description when buying.