This Texas Instruments TI-84 Plus Graphing Calculator in Black is a reliable tool for all your mathematical needs. It is a handheld device with a regular key size and display size, powered by a battery. This calculator is programmable and features an LCD display, USB connectivity, and advanced calculus functions. It is suitable for business and industrial use, making it an ideal office equipment for professionals. The model is Texas Instruments TI-84 Plus, and it belongs to the category of calculators. Get your hands on this powerful calculator and simplify your calculations.