Introducing new GA-2000 Utility Color next-generation toughness models that are part of the G-SHOCK watch brand that is constantly setting new standards for unmatched timekeeping toughness. These new models combine practical and utilitarian colors that go well with street fashions, with camouflage pattern faces to create distinctive looks that fit right in with a wide range of fashions and activities. A carbon core guard structure provides greater shock resistance to the module by enclosing it in a carbon case. Carbon Core Guard Structure. A new carbon core guard structure protects the module by enclosing it in a carbon case. The case is made of fine resin embedded with carbon fibers for outstanding strength, crack resistance, and durability.