Cartier Calibre de Cartier Chronograph Watch W7100005

45mm 18K white gold case, sapphire back, heptagonal crown set with a faceted sapphire, sapphire crystal, guilloché galvanic slate-colored dial with black transferred Roman numerals, manual winding caliber 9907 MC movement with chronograph function, approximately 50 hours of power reserve, black alligator strap with 18K white gold double adjustable deployant buckle. Water resistant to 30 meters.