Casio G-Shock 'Master of G' Yellow Rescue Series MUDMASTER Mens Watch GGB100Y-1AExperience the ultimate in durability and style. The GGB100 MUDMASTER model features a high rigidity carbon case that prevents damage and warping, ensuring extreme airtightness and shock resistance. The back cover is made of shock resistant fine resin embedded with glass fibers, providing a high level of resistance to dust and mud. The bezel features three layers of fine resin with carbon fiber inserts and is accentuated in bright yellow, similar to