The Texas Instruments BA II Plus Financial Calculator is a handheld device powered by batteries, featuring an LCD display and calculus functions. This calculator is designed for business and industrial use, providing accurate financial calculations for analysis and decision-making. With a regular-sized keypad and display, it is a reliable tool for professionals in various fields. The model BA II PLUS is known for its durability and functionality, making it a popular choice for those in need of a dependable financial calculator.