This Texas Instruments TI-83 Graphing Calculator is a reliable and efficient tool for all your mathematical needs. It is a handheld device with a regular sized display and runs on battery power. The calculator is programmable and comes in a sleek gray color. It is a unit type calculator with a unit quantity of 1. The Texas Instrument TI 83 is a great choice for anyone in need of a high-quality graphing calculator. It is perfect for use in offices, schools, or for personal use.