Graham Watch Chronofighter Superlight Carbon Strip Skeleton Green 2CCCK.G01A. The Chronofighter Superlight Carbon Skeleton weighs less than 100 grams. Its 47mm case is formed of epoxy resin infused with a green dye, while the widespread use of 3K carbon further contributes to the model’s featherlight mass. The open-worked dial reveals various components in motion and the chronograph trigger delivers an ergonomic interface between the watch and its wearer.