Jaquet Droz Grande Seconde SW Titanium & Rose Gold Men's Watch J029037440. This watch has a self-winding mechanical movement with a 68 hour power reserve contained within a 45mm titanium case. The dial is black carbon fiber with overlapping hours and minutes sub-dials in a figure eight covered by a scratch resistant sapphire crystal. The strap is black rubber with a folding clasp. Water resistant up to 50 meters.