The Texas Instruments TI-84 Plus Graphing Calculator in black is a handheld device that offers regular size keys and a display. It is a versatile tool designed for basic, financial, and graphing calculations. Powered by batteries, this calculator from Texas Instruments is ideal for students and professionals alike, featuring an LCD display and calculus functions for added convenience. While it may be missing a cover, this model is still a reliable and useful office equipment for various business and industrial applications.