CASIO G-SHOCK Metal Case GM-5600U-1JF WatchProduct Overview The GM 5600U 1JF is a rugged metal cased G SHOCK watch that combines classic durability with a modern, sleek design. With its iconic square case shape and enhanced metal bezel, it offers both toughness and style. The watch features essential G SHOCK functions packed into a comfortable and durable design suitable for daily use and outdoor activities. Key Features Stopwatch: Precision timing with 1 100 second accuracy up to 59 minutes