GA2100GB-1A WatchDescription Go metal clad in cool, sophisticated color with a slim GA 2100 that inherits the design concept of the first ever G SHOCK. The polished gleam of metallic color and the iconic octagonal form of the DW 5000C, the original G SHOCK, come together in a rugged digital analog combination timepiece measuring just 11. 8mm from bezel to case back. A slim design with the same tough G SHOCK construction. Finished beautifully with a circular hairline