Master of G

The Master of G series is a collection of G-Shock watches produced by Japanese electronics and wristwatch manufacturer Casio in the late 1990s. There were several models in the range, as these were designed for use in harsh environments, and many were designed to showcase a new form of technology that Casio would eventually introduce into the G-Shock and ProTrek outdoor ranges, such as the Tough Solar power source, altimeter function and digital compass.

History

The Master of G series began in 1985 with the G-Shock II, model number DW-5500C. This was a classic square G-Shock, but the bezel contained softer parts and slipped over the buttons. This way Casio created a Mud Resistant structure. The DW-5500C was therefore nicknamed "Mudman". It took until November, 1993 before Casio came up with the Frogman model, however at this stage the watch was not called a Frogman, except in Japan where the case-back did feature the word "FROGMAN" and a small figure of a diving frog. The Frogman was a heavy divers model that featured a unique asymmetrical design of thick rubber shielding around a self-contained module, with titanium screw-back case—an unusually high-cost design. A thick double-tang resin strap and multitude of digital features including dive timing completed a competent diver's watch. The Frogman proved to be very popular, and this is presumably one of the key reasons why at some point between then and 1995 Casio decided to produce more high-end premium models, and with them limited edition colour variants that, due to their scarcity, have in some cases become very valuable indeed.