These new takes on the GW5000 deliver the same functional advances in radio-controlled, solar-powered timekeeping, now in fresh single-tone color options. Rest assured, though — popular design details from the original G-SHOCK, from the solid sophistication of the metal case to the screw-lock case back and face design, stay just the same style. While staying true to the first-ever G-SHOCK, these watches are even tougher. The metal case and screw-lock case back are finished with diamond-like carbon coating for even more outstanding abrasion resistance. The screw-lock case back goes even further with a mirror finish that exude quality. The bezel, band, and other key resin components are made of bio-based resin, a material expected to help reduce environmental impact. These watches bring sophisticated technology to the timeless 1983 design to deliver truly contemporary excellence.