This Texas Instruments TI-89 Titanium Graphing Calculator is an exceptional device for anyone who requires a high-quality calculator for their work. It comes in a sleek black color, has been tested to ensure full functionality, and is accompanied by a cover for added protection. The model is Texas Instruments TI-89, and it is a handheld unit that runs on (4)AAA batteries. The calculator has a regular key size, a regular display size, and is classified as a graphing type. It is a unit that offers precision and accuracy, making it ideal for individuals in the office or business sector. The product is made in China and comes with a single unit quantity.