Self-winding mechanical movement. Caliber 324 S Q. Perpetual calendar. Day, month, leap year and day/night indication in apertures. Date by hand. Moon phases. Sweep seconds. Rose-gilt opaline, charcoal gray gold applied numerals with luminescent coating. White gold. Interchangeable full back and sapphire-crystal case back. Water-resistant to 30m. Diameter: 40 mm. Height: 11,13 mm. Alligator leather with square scales, hand-stitched, shiny chocolate brown. Fold-over clasp.