G-Shock Watch Metal Covered Black All Black GM-2100BB-1AER. Despite the subtle stealthy all black looks, this timepiece is bound to be noticed. Boasting our iconic 2100 design this edition is enhanced with a steel covered carbon casing for unbeatable strength you'd expect from G-SHOCK. LED backlight, stop watch, timer & handy world time make this covert all-rounder an essential piece for your collection.