The Texas Instruments TI-83 Plus Graphing Calculator is a handheld device with a regular key size, powered by batteries. It is designed for graphing functions and is part of the model line from Texas Instruments. This specific model is the TI-83 Plus, known for its capabilities in mathematical calculations and graphing tasks. The calculator comes with a cover for protection and storage. Tested and confirmed to work effectively, this graphing calculator is a reliable tool for students and professionals alike in various business and industrial applications.