Patek Philippe [2021 New Model] Annual Calendar Automatic Flyback Chronograph 5905/1A-001 with Integrated Bracelet and Green Sunset Dial

Patek Philippe has unveiled the first version of its Annual Calendar Automatic Flyback Chronograph 5905, available in stainless steel with a three-link integrated bracelet, a rare material in the brand's collection. This bold and casual new design is intended to encourage everyday wear for Patek Philippe's complicated watches.

Automatic Flyback Chronograph with Annual Calendar 5905/1A-001

　The dial, with its highly rhythmic design, features a new, elegant and contemporary olive green sunburst finish. The central chronograph seconds hand, large 60-minute counter at 6 o'clock, and circularly-arranged day, date and month displays, allowing instant reading of the annual calendar, ensure excellent visibility of the additional functions.

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  Arc-shaped day, date, and month display windows

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  Patek Philippe's unique convex concave bezel

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  Center chronograph second hand, large 60-minute counter (at 6 o'clock), round window for day/night indication

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  Integrated steel bracelet with a combination of polished and satin finishes

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  Contemporary olive green sunburst dial

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  Patented fold-over buckle with four independent clasps for added security

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  Vertical clutch flyback chronograph caliber "CH 28-520 QA 24H"

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  The pushers on the left side of the case are for adjusting the day of the week, the date, and the month from top to bottom.

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Caliber CH 28-520 QA 24H

　The Caliber CH 28-520 QA 24H, visible through the transparent sapphire-crystal case back, faithfully maintains the traditional column-wheel chronograph control. However, instead of a horizontal gear clutch, it features a vertical disc clutch. This modern technical solution causes virtually no wear or tear and allows the chronograph seconds hand to run constantly, allowing it to function as a central seconds hand. The patented annual calendar automatically distinguishes between months with 30 and 31 days, requiring only one date adjustment per year, on March 1st.

　The polished stainless steel case features a sophisticated design with a concave bezel and recessed case sides. The integrated stainless steel bracelet is inspired by the Aquanaut 5167/1A model, with its contrasting polished outer links and satin-brushed inner links, but is subtly different in that the inner surface and edges of the bracelet are polished to match the case. It is fitted with a patented Patek Philippe folding clasp with four independent clasps for added security.