This Texas Instruments Scientific Calculator Ti-30x IIS is a must-have for any student or professional. With its regular key size and handheld size, it is easy to carry around and use on-the-go. The calculator features an LCD display with backlight, calculus functions, and programmable features, making it perfect for solving complex mathematical problems. It runs on solar power or battery, and comes with a warning for California residents about the chemical hazards of the product. The calculator is made in the Philippines and is not part of a custom bundle. Buy this calculator today and make your mathematical problems a breeze to solve!