This Texas Instruments TI-83 Plus Graphing Calculator is a reliable and efficient tool for all your mathematical needs. It is powered by 4 AAA batteries (not included) and is handheld, making it easy to use on the go. 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 purposes and is ideal for students, teachers, and professionals alike. Also including a TI -30xIIs model