Casio Janus AT-550G Men’s Vintage Ana-Digi Touchscreen Calculator Watch JDM 80s

Up for sale is an extremely rare vintage Casio AT-550G “Janus” men’s analog-digital touchscreen calculator watch from the Japan Domestic Market (JDM), dating to the early 1980s and powered by Module 320. This remarkable model is widely regarded as one of the earliest touchscreen watches ever produced and represents one of Casio’s most experimental and technologically ambitious designs of the era. The AT-550G features a unique hybrid “Janus” layout combining traditional analog hands with a digital LCD display. What makes this watch particularly remarkable is its pioneering touch-sensitive crystal, which allows the wearer to operate the calculator by tracing numbers and mathematical symbols directly onto the watch glass with a fingertip. Casio referred to this technology as a finger-trace recognition system, an early gesture-recognition interface developed decades before touchscreen technology became commonplace. Unlike conventional calculator watches that rely on physical buttons, the AT-550G’s transparent sensor layer is incorporated into the crystal itself. The watch was designed to interpret the shapes of numbers and mathematical symbols traced across the surface and convert them into calculator inputs displayed on the LCD. This unusual technology makes the Janus one of the more fascinating examples of Casio’s experimentation with wearable electronics during the early digital era. The watch is being sold for parts and repair. A battery was inserted into the watch, but it did not fire up. It has not been tested beyond this point, so it is unknown what the underlying issue is or whether it can be fixed. The watch is being sold as is for parts and repair. All parts of the watch are original, including the original Casio gold-tone bracelet and signed Casio clasp. The watch has signs of use and age but remains in presentable vintage physical condition overall. There is visible surface wear, scratching, and areas of finish wear consistent with its age and prior use. The photos best describe its overall physical condition and should be reviewed carefully by interested buyers. Examples of the AT-550G rarely appear on the market, and the model remains an interesting piece from Casio’s early experimentation with touchscreen and gesture-based technology. Key Details: * Brand: Casio * Model: AT-550G “Janus” * Module: 320 * Era: Early 1980s * Origin: Japan Domestic Market (JDM) * Display: Analog hands with digital LCD * Special Feature: Finger-trace touchscreen calculator interface * Finish: Gold-tone * Bracelet: Original Casio gold-tone bracelet * Condition: Parts and repair; did not fire up after a battery was inserted; underlying issue unknown; sold as is * Physical Condition: Presentable vintage physical condition with signs of use and age A rare opportunity to acquire one of Casio’s most unusual and technologically ambitious vintage analog-digital watches, whether for restoration, parts, or collection. Ships carefully. Feel free to message me with any questions.