Measuring 30 mm × 39.2 mm with a slender 7.45 mm thickness, the case is crafted entirely in 18K white gold and topped by a beaded crown set with a blue sapphire cabochon. Blued steel sword-shaped hands sweep across a fully skeletonized dial, while Roman numeral bridges speak to the watch's classical origins. A sapphire crystal sits above the dial, and a matching sapphire case back opens the view to the movement below.
Powering the watch is the manual-winding caliber 9616 MC, a 159-part manufacture movement whose skeletonized bridges display hours, minutes, and small seconds. A 72-hour power reserve means the watch can comfortably sit unworn through a weekend without requiring attention. Water resistance is rated to 30 meters.
The black alligator leather strap is secured by a double adjustable folding buckle fashioned in 18K white gold, offering both refinement and a reliable fit. Reference W5310012 is presented with its original packaging, making it a considered choice for the collector drawn to mechanical visibility within one of watchmaking's most recognized case shapes.