G-Shock Watch 5000 Series GMW-B5000D-1ER. The G-Shock 5000 series has stayed true to the square shaped pedigree which has become a style icon. 35 years later, the GMW-B5000 nods to the heritage of that first ever G-Shock while pushing new boundaries in every way from its materials to the construction and features. The outer components, including the watch band, case, and bezel, are entirely made from stainless steel while the interior employs a new shock resistant construction. Complete with radio controlled timekeeping and a Bluetooth smart link, this collectors G-Shock is sure to make its mark in the G-Shock hall of fame.