Focus Electronic FK-3001 mechanical keyboard features a built-in calculator with an LCD screen and a full numeric keypad. This vintage peripheral is designed for PC/XT and AT systems, with a DIP switch selector on the underside for compatibility across various legacy computing platforms. The unit includes a coiled DIN cable and a battery compartment for the calculator function. It displays significant yellowing and surface wear consistent with its age, making it an ideal candidate for restoration or as a source for vintage keycaps and switches. Made in Taiwan, R.O.C.