The SeeMore Mini Track Ball from Seeed Studio is a micro-sized track ball designed for use with embedded systems. It features a high-precision optical trackball, full size mechanical keyswitches, and mechanical scroll wheel for precise control. Its size makes it ideal for use in locations where space is limited, such as in vehicles, robotics, consumer electronics, and more. It is compatible with most platforms and interfaces, including USB HID, PS/2, and SPI. Additionally, it has an optional rubberized coating for enhanced grip. This makes it a great option for a variety of applications.