The Texas Instruments TI-89 Titanium Graphing Calculator in black is a reliable and efficient tool for solving complex mathematical problems. With its graphing capabilities and regular display size, it is ideal for students and professionals alike. Powered by batteries, this model from Texas Instruments is designed to work effectively for a long period of time. Tested and confirmed to be in working condition, this graphing calculator is a valuable asset for those in need of advanced mathematical functions.
eBay