This Texas Instruments TI-83 Plus Graphing Calculator is a reliable tool for all your mathematical needs. With its advanced features, it's perfect for students, engineers, and mathematicians alike. The calculator comes with a cover to protect it from scratches and damage. The brand of this calculator is Texas Instruments, and the model is TI-83 Plus. It's categorized as a graphing calculator and is ideal for use in various settings, including office and business environments. Whether you're solving complex equations or statistical problems, this calculator is the perfect choice.