PATEK PHILIPPE COMPLICATIONS WORLD TIME FLYBACK CHRONOGRAPH REF. 5935A-001 SELF-WINDING CH 28‑520 HU CALIBER

5935A - COMPLICATIONS 
SELF-WINDING

As the first stainless steel version of a cult model, the new Ref. 5935A-001 self-winding World Time flyback chronograph stands out with its sporty vintage looks. The carbon motif in the center of the opaline rose gilt dial reflects a modern, dynamic spirit.
The World Time function simultaneously indicates the time in 24 time zones. It is based on an exclusive patented mechanism that can correct all displays with a single pusher at 10 o'clock.
This watch is delivered with two calfskin straps - one in grained taupe and the other in beige with a nubuck finish.
WATCH
Self-winding mechanical movement. Caliber CH 28‑520 HU. Flyback chronograph. Central chronograph hand. 30-minute counter. World Time. 24-hour and day/night indication for the 24 time zones.
DIAL
Rose-gilt opaline with "carbon" motif, charcoal gray gold applied hour markers with luminescent coating.
CASE
Steel. Sapphire crystal case back. Water-resistant to 30 m. Diameter: 41 mm. Height: 12.75 mm.
STRAP
Calfskin, grained, hand-stitched, taupe (originally fitted). Calfskin, nubuck finish, hand-stitched, beige (additional strap). Fold-over clasp.

CALIBER CH 28-520 HU
SELF-WINDING
Flyback chronograph. Central chronograph hand. 30-minute counter. World Time. 24-hour and day/night indication for the 24 time zones. Diameter: 34.5 mm. Height: 7.97 mm. Number of parts: 343. Jewels: 38. Power-reserve: min. 50 hours - max. 55 hours. Winding rotor: 21K gold central rotor. Balance: Gyromax®. Frequency: 28,800 semi-oscillations/hour (4 Hz). Balance spring: Spiromax®. Hallmark: Patek Philippe Seal.