The Texas Instrument TI-30X IIS Scientific Calculator Solar is a scientific calculator that's perfect for students and professionals alike. It features an LCD display that makes reading and interpreting results easy. With regular key size and regular display size, users can easily enter data and read results. This handheld calculator is powered by solar power, making it a convenient and eco-friendly option. The Texas Instrument TI-30X IIS Scientific Calculator Solar is a versatile tool that can be used for a wide range of calculations, including algebra, geometry, trigonometry, statistics, and calculus.