Manually wound mechanical movement Caliber CH 29-535 PS Q. Central chronograph hand and instantaneous 30-minute counter. Day, month, leap year and day/night in apertures. Perpetual calendar. Day, month, leap year and day/night indication in apertures. Moon phases. Date by hand. Seconds subdial. Tachymeter scale. Bezel and lugs set with 58 baguette diamonds (~3.63 ct). Black lacquered dial, applied gold hour markers and 1 baguette diamond at 12 o’clock. Shiny black alligator strap with square scales, hand-stitched, with fold-over clasp set with 22 baguette diamonds (~0.97 ct). Interchangeable full back and sapphire-crystal case back. Water resistant to 30 m. Platinum case d iameter: 41 mm. Height: 12.7 mm.