This Texas Instruments TI-30XA scientific calculator is a reliable tool for any mathematician or scientist. It features a regular-sized LCD display and is powered by both solar and battery sources, making it an ideal calculator for on-the-go calculations. The calculator is handheld in size and is designed for regular-sized keys. It is perfect for basic, financial, and scientific calculations, and is ideal for use in office, business, and industrial settings. The calculator has been tested and works perfectly, and is made in China.