For local G-Shock fans, you can pick up the G-Shock catalog at the Casio Wrist Technology shops. I managed to pick a copy recently.
Inside, you will find most of the G-Shock models that are sold in Singapore. The Master of G series with the Mudman and Gulfman in their current offerings is my favorite G-Shock line. They are described as "the ultimate G-Shock built for use in the world’s harshest environments".
The catalog includes pictures to illustrate the features of the Mudman and Gulfman.
Click on any thumbnail to see a larger image
Besides the Master of G series, the Street Classic series is another line that I like.
Included in the Street Classic series are the Mudman’s with camouflaged strap and the full camouflaged G-5500 models.