Mouse devices are input peripherals used to interact with computers and other digital devices. They typically consist of a hand-held unit with buttons and a scroll wheel, allowing users to navigate graphical user interfaces. The most common types of mouse devices include optical mice, which use light to detect movement, and wireless mice, which connect via Bluetooth or RF technology. These devices enable users to perform various tasks, such as selecting items, dragging files, and scrolling through documents. The design of mouse devices has evolved over time, with ergonomic models available to enhance comfort during prolonged use.