The Texas Instruments TI-84 Plus Graphing Calculator with GuideBook is a powerful and reliable tool for all your mathematical needs. This handheld calculator is designed with a regular key size and runs on battery power. It is perfect for students, professionals, and anyone in between who requires a graphing calculator for their calculations. This model, the Texas Instruments TI-84 Plus, is a popular choice for its ease of use and advanced functionalities. It is made in China and comes with a GuideBook to help you get started. Whether you're working on a math problem or creating a graph, this calculator is the perfect tool for the job.