The “G-Shock WatchNavi Special Edition 2015 Ver. 1” magazine was a special promotional release for Singapore. The publication is like a catalog or “bible” in the same format as the Japanese “G-Shock Perfect Bible” which was last published in 2013 for the G-Shock 30th anniversary. It also has articles about certain G-Shock models, features, and history. All the WatchNavi content is written in English and it covers over 2,300 models since 1983 and up to 2015. You can get an idea of what’s inside at hullabalooloft.blogspot.com.