TRANSPARENT PACK Series timepieces are created using semi-transparent resin parts. There are three models with white-based semi-transparent parts. Basic models are the standard square DW-5600, the big case GA-700, and the popular GA-2100 with octagonal bezel. Everything about these models makes them the perfect choice as attractive fashion items. 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.