The Casio MJ-120D Plus is a versatile desktop calculator known for its reliability and functionality. Here are some details about this model: Dual Power Source: Similar to other Casio calculators, the MJ-120D Plus typically operates using both solar power and battery power. This ensures continuous operation even in low-light conditions or when the battery is drained. Large Display: The calculator is equipped with a large, easy-to-read display, making it convenient for users to view calculations and results without straining their eyes. Arithmetic Functions: The MJ-120D Plus offers basic arithmetic functions such as addition, subtraction, multiplication, and division. Additionally, it includes percentage calculation, square root, and memory functions, making it suitable for various mathematical tasks. Design: This model usually features a sleek and ergonomic design, with well-spaced keys for comfortable and efficient input. Its compact size makes it suitable for both desk use and portability. Additional Features: Some variants of the MJ-120D Plus may include extra features such as tax calculation, currency conversion, or cost/sell/margin calculations, depending on the specific model and region.