This Texas Instruments Scientific Calculator, model TI-30XS, is a reliable tool for any mathematician or scientist. It has been tested and works perfectly. The calculator is handheld and has a regular sized display and key size. It runs on solar power and is made by the well-known brand, Texas Instruments.

This calculator is perfect for office or academic use, and is sure to meet all your mathematical needs. It is designed for scientific use and has a range of functions that make it stand out from other calculators. The TI-30XS is a great investment for anyone in need of a reliable and efficient calculator for their studies or business.