Pairing a glossy black resin case with polished gold details, the G-Shock GA-2100GB-1ACR is a refined take on the beloved "CasiOak" model. Housing a dual analog/ digital movement, the slender octagonal watch is ready for action; with a shock-resistant Carbon Core Guard structure and 200 meters of water resistance. The dial is given a circular hairline finish, and a vapor deposition treatment for a shimmering gold appearance. A day sub dial resides along the 9 o'clock position, while an LCD display keeps track of your alarms and timing functions.