5204R - GRAND COMPLICATIONS
MANUAL WINDING
The split-seconds chronograph is one of the three most difficult complications to master, alongside the tourbillon and the minute repeater.
It takes a highly sophisticated mechanism to control the two chronograph hands, one of which may be stopped to measure an intermediate or lap time or retain a reference time while the other continues its course unaffected, even by fractions of a second.
When released again, the split-seconds hand instantly catches up with the primary hand and the two stacked hands move on together.

Dial: Silvery opaline, applied gold hour markers with luminescent coating. 18K gold dial plate. Rose gold.
Case Diameter: 40.2 mm.
Height: 14.3 mm.
Water resistant to 30 m. Interchangeable full back and sapphire-crystal case back.
Alligator strap with square scales, hand-stitched, shiny chocolate brown, fold-over clasp.
Perpetual calendar.
Day, month, leap year and day/night indication in apertures.
Date by hand.
Seconds subdial.
Split-Seconds chronograph.
Instantaneous 30-minute counter. Moon phases.

CALIBER
CHR 29-535 PS Q
MANUAL WINDING
Split-seconds chronograph, 30-minute counter. Perpetual calendar with day/night indication.
Diameter: 32 mm.
Height: 8.7 mm.
Parts: 496.
Bridges: 12
Jewels: 34
Power Reserve: With the chronograph disengaged: min. 55 hours - max. 65 hours.
Balance: Gyromax®.
Vibrations/hour: 28 800 (4 Hz)
Balance Spring: Breguet
Hallmark: Patek Philippe Seal.