Casio G-Shock Carbon Core Guard Analog Digital Quartz Diver's GA-2100-1A GA2100-1 200M Men's Watch The Casio G-Shock GA-2100-1A is a striking timepiece that embodies bold toughness and modern design. Featuring the innovative Carbon Core Guard structure, it offers enhanced durability and strength by incorporating carbon fiber into the resin, making it lighter and more rigid than traditional resin cases. This design eliminates the need for external button guards, enhancing its resilience against damage and deformation. With a sleek dial and a highly readable analog-digital display, this watch is both functional and stylish. The double LED light ensures visibility in any light conditions, while the 200-meter water resistance makes it perfect for diving and other aquatic activities. Equipped with a 1/100-second stopwatch, world time, battery level indicator, alarms, and a hand shift feature, the GA-2100-1A is packed with useful features for daily life and adventure. Its luminous hands and full auto calendar add convenience, and the 12/24-hour format offers flexibility in timekeeping. The screwed case back ensure comfort and security, while the buckle clasp provides a secure fit. With an approximate 45 mm case diameter and a 12 mm case thickness, the GA-2100-1A delivers both robust functionality and a sleek, modern look for the active, style-conscious wearer. Features: Resin Case Resin Strap Mineral Crystal Quartz Movement Black Dial Analog Digital Display Double LED Light World Time 1/100 Second Stopwatch Battery Level Indicator Alarms Hourly Time Signal Hand Shift Feature Full Auto Calendar 12/24 Hour Format Luminous Hands Day And Date Display Screwed Case Back Buckle Clasp 200M Water Resistance Approximate Case Diameter: 45mm Approximate Case Thickness: 12mm Approximate Lug Width: 25mm