Cartier Rotonde de Cartier Astroregulateur Numbered Edition of 50 Watch - 50 mm Titanium Case - W1556211

50mm titanium case, 18mm thick, titanium crown set with a sapphire, sapphire crystal, slate gray dial, caliber 9800 MC automatic movement with hours and minutes with oscillating weight bearing the escapement, approximately 54 hours of power reserve, black alligator strap, deployant buckle in 18K white gold. Water resistant to 30 meters.