This Texas Instruments TI-83 Plus Graphing Calculator is a reliable and efficient tool for all your mathematical needs. With a black color and regular key size, it is perfect for use in a professional or academic setting. The battery-powered device is easy to use and will help you solve even the most complex equations. The calculator is made by Texas Instruments, a trusted brand known for producing high-quality calculators. This model, TI-83 Plus, is specifically designed for graphing and is ideal for students, engineers, and mathematicians. It is manufactured in China and is ready to use straight out of the box.