Jaquet Droz Grande Seconde Cerclee Carbon Fiber Men's Watch J003034283. This watch has an automatic self-winding movement with a 68 hour power reserve contained within a 44mm 18 carat white gold round case. The dial is black carbon fiber with the Jaquet Droz signature figure eight intersecting hours and seconds sub-dials covered by a scratch resistant sapphire crystal. The strap is black crocodile leather with a tang buckle. Water resistant up to 30 meters. Numerus Clausus 88.