Scientific Calculator for Students: ROATEE portable scientific calculator containing 401 functions such as scientific functions, scientific computation, complex number calculations, integrals, matrix calculations, vector calculations and so on.Suitable for middle school courses such as general mathematics, statistics, chemistry, biology, and general science 2-Line Display: Showing input and calculation results at the same time on the display. Greatly improves computational efficiency Dust-resistant and Durable: ROATEE scientific calculator comes with a dust cover that can be placed at the back while in use and covered after use to prevent dust from entering. The portable size and durable material designed for students are not only convenient for storage and carrying but also have a longer service life Dual Power Supply & More Sensitive Key: Solar panel + replaceable button battery for long term use. High quality plastic buttons, more sensitive and precise than silicone buttons, more comfortable to touch Essential School Supplies: Suitable for SAT, GCSE, etc...Functionally complete with a stylish design, color scheme, and exterior, making it highly suitable for middle school students and above