Description
The Casio G-Shock GA-100BEG-1A (also referenced as GA-100BEG-1ADR / GA-100BEG-1AER) is an aggressive, heavy-duty digital-analog timepiece from G-Shock’s legendary GA-100 series. Renowned for its bold, industrial multi-dimensional design, this special colorway reference pairs a durable matte black resin case with energetic bezel text and dial highlights. Engineered to handle extreme environments, outdoor adventures, and active daily utility, it delivers G-Shock’s signature shock resistance and 200-meter water resistance at an exceptional value.The visual hallmark of the GA-100BEG-1A reference is its large-case architectural dial layout. Set beneath a scratch-resistant mineral glass crystal, the layered face features prominent analog hands and geometric hour markers alongside dual digital LCD displays and a central sub-dial for speed calculations. The energetic accent color trim frames the LCD readouts, providing a striking high-contrast aesthetic that gives the watch a strong tactical presence on the wrist.Beneath its rugged exterior, the watch is powered by Casio’s precision in-house digital-analog quartz movement (Module 5081). Designed for high-performance sports and active use, the module features ISO 764-compliant Magnetic Resistance (Class 1) to protect timekeeping accuracy from magnetic field interference. It comes equipped with a comprehensive suite of digital tools, including a 1/1000-second ultra-precision stopwatch (capable of calculating lap speed up to 1,998 units/hour), a 24-hour countdown timer with auto-repeat, World Time across 29 time zones (48 cities + UTC), 5 daily alarms (including 1 snooze alarm), an hourly time signal, and a full auto-calendar pre-programmed to the year 2099. Low-light reading is clear thanks to an Amber Auto LED light switch with selectable illumination duration and afterglow.Designed with commanding oversized G-Shock proportions, the case measures 55.0 mm in length by 51.2 mm in width with a profile thickness of 16.9 mm, weighing 70 grams for a solid, durable wrist presence. Built for extreme water exposure and heavy-duty activity, the case achieves a certified 200-meter (20 bar / 660 ft) water resistance rating—making it fully suitable for heavy rain, swimming, surface water sports, and scuba diving. The timepiece comes finished on a flexible black resin strap with a heavy-duty dual-prong stainless steel buckle clasp.
