Batteries not included This Texas Instruments TI81Calculator is a powerful tool for any mathematician or scientist. With its graphing capabilities, it can easily solve complex equations and display the results in a clear and concise manner. Whether you're a student, teacher, or professional, this calculator is sure to impress. Featuring a regular key size and a handheld design, this calculator is perfect for on-the-go calculations. It runs on battery power and is manufactured by the trusted brand Texas Instruments. With its model number TI 81, this calculator is a true classic in the world of mathematics.
eBay