This Texas Instruments TI-30X IIS Advanced 2-Line Scientific Calculator is a reliable and efficient tool for any mathematician or scientist. With its advanced features and powerful calculations, this calculator is perfect for solving complex equations and displaying your work. The calculator is made by Texas Instruments, a trusted brand known for producing high-quality calculators. It is designed for office and industrial use, and is ideal for calculations in business, finance, statistics, accounting, and engineering. This model, the TI-30X IIS, is a 2-line calculator with advanced scientific features. It is manufactured in China and is perfect for anyone in need of a reliable and efficient calculator for their business or academic pursuits.