At its heart, the 5231J-001 runs on a self-winding mechanical movement, Caliber 240 HU, offering 24-hour and day/night indication across all 24 time zones. The 38.5 mm yellow gold case measures 10.23 mm in height, features a sapphire-crystal case back, and carries a water resistance of 30 m.
The dial is the centerpiece of this reference: a hand-crafted cloisonné enamel center depicts Europe, Africa, and the Americas, accented by four yellow gold spangles set against an 18k gold dial plate — a combination of horological and artistic craft rarely seen together.
The watch is fitted with a hand-stitched shiny chocolate brown alligator leather strap with square scales, secured by a fold-over clasp. This example comes as a complete set with original box and papers.