A watch case is the outer shell of a wristwatch that protects its internal components, including the movement and dial. Made from materials like stainless steel, gold, or plastic, the case serves both functional and aesthetic purposes. It helps to shield the watch from dust, moisture, and impacts, ensuring durability and longevity. Watch cases come in various shapes and sizes, such as round, square, or rectangular, catering to different styles and preferences. The design of a watch case can significantly influence the overall look of the timepiece, making it an essential aspect of watch design and horology.