The Casio G-SHOCK GM-2100YM-8AER is a robust timepiece featuring a glass fiber-reinforced resin case with a stainless-steel bezel, meticulously crafted through forging, cutting, and polishing processes. The watch is equipped with a Tough Silicone Band, offering flexibility and comfort, with a urethane sheet on the top surface for enhanced abrasion resistance. Silver vapor deposition is applied to the underside of the urethane sheet, creating a stylish look that harmonizes with the metal bezel. Key features include shock resistance, 200-meter water resistance, and a Super Illuminator (high-brightness LED light) for maintaining readability in the dark. The watch measures 49.3 × 44.4 × 11.8 mm and weighs 84 g. Reference number: GM-2100YM-8AER.