Used, good condition. Case is worn. Tested, working. See photos. The Texas Instruments TI-89 Titanium Graphing Calculator is a handheld unit powered by batteries, featuring a regular-sized display and key size. It is a programmable calculator with capabilities for graphing, calculus, and USB connectivity. The calculator is designed for office and educational use and is manufactured in China by Texas Instruments. It offers advanced functionalities for solving complex mathematical problems and creating visual representations of equations and functions.
eBay