5905R-010
FLYBACK CHRONOGRAPH. ANNUAL CALENDAR.
A connoisseur's choice
An alliance of two highly sought-after Patek Philippe complications, the self-winding flyback chronograph with Annual Calendar Reference 5905 is offered in a rose gold version with a blue sunburst dial – a modern, elegant color that reinforces the timeless style of this flagship model. The Annual Calendar requires only one correction per year, at the end of February.
Self-winding CH 28-520 QA 24H caliber, flyback chronograph with Annual Calendar.
Flyback chronograph with vertical clutch and 60-minute counter.
Annual Calendar indications displayed along an arc.
Sunburst blue dial with rose gold applied faceted hour markers. Rose gold faceted dauphine hands with white luminescent coating. Rose gold applied aperture for the date.
Polished chronograph pushers and rose gold case with scalloped lugs.
Shiny dark blue alligator leather strap with rose gold prong buckle.
Technical characteristics
Sunburst blue, rose gold applied faceted baton-style hour markers. Rose gold faceted dauphine-style hands with white luminescent coating.
Rose gold. Diameter: 42 mm. Thickness: 14.03 mm. Water-resistant to 30m. Sapphire crystal case back.
Alligator leather with square scales, hand-stitched, shiny dark blue. Rose gold prong buckle.
CH 28-520 QA 24H
Self-winding
Flyback chronograph
Central chronograph hand
60-minute counter
Annual Calendar
Day, date, month and day/night indication in aperture
Diameter: 33 mm. Thickness: 7.68 mm. Number of parts: 402. Number of jewels: 37. Power reserve: min. 45 hours – max. 55 hours. Winding rotor: 21K gold central rotor. Balance: Gyromax®. Frequency: 28,800 semi-oscillations/hour (4 Hz). Balance spring: Spiromax®. Distinctive sign: Patek Philippe Seal.
