Product size: 16.2X8.25X1.2CM. Calculator design: Algebra and Fraction Calculator with Large Screen and 13-Digit DisplayThe LCD display of the scientific calculator offers a better visual experience, providing ideal visibility while being very convenient. Two separate screens display the calculation process and the result, avoiding errors or forgetting what you have calculated, which makes it very handy and practical. Multiple calculations: The calculator includes a wide range of calculation functions, not only for PI and exponential functions, but also for permutations and decompositions. It can also be used for basic calculations, statistical calculations and fraction calculations. High quality materials: Made of high quality plastic, this desktop calculator is lightweight, portable, durable and features ergonomic and comfortable keys. The special recessed power button prevents accidentally touching the button to clear calculations, and also prevents the calculator from being accidentally turned on when turned off and wasting energySmart power on, automatic power off after 7 minutes of inactivity. Multi-scene use: This practical multifunctional scientific calculator is suitable for secondary schools, universities, primary schools, engineering schools, accounting offices and other study or office premises.