At the heart of the Patek Philippe 5905/1A-001 beats the caliber CH 28-520 QA 24H, a self-winding movement that seamlessly integrates flyback chronograph functionality with annual calendar complications across its 42mm stainless steel case. The olive green sunburst dial creates a striking contrast against the polished steel construction, representing Patek Philippe's bold departure into contemporary colorways while maintaining the technical excellence expected from Geneva's most prestigious manufacture. This unworn example showcases the intricate dance of subdials and apertures that display day, date, month, moon phases, and 24-hour indication, all governed by the flyback chronograph's instant-reset capability that eliminates the traditional stop-start-reset sequence for timing consecutive events.

Key Features & Specifications

• Caliber CH 28-520 QA 24H Movement — Self-winding flyback chronograph with annual calendar, featuring column wheel construction and vertical clutch for seamless chronograph engagement
• Olive Green Sunburst Dial — Contemporary colorway with applied gold hour markers, creating depth and luminosity that shifts throughout the day
• Annual Calendar Complication — Automatically adjusts for months with 30 and 31 days, requiring manual correction only once per year in February
• 42mm Stainless Steel Case — Robust construction with sapphire crystal caseback revealing the decorated movement with 21K gold rotor
• Integrated Steel Bracelet — Patek Philippe's signature horizontal link design with fold-over clasp, engineered specifically for the 5905 series
• Flyback Chronograph Function — Instantaneous reset and restart capability via single pusher activation, ideal for measuring sequential timing intervals
• Moon Phase Display — Accurate to one day in 122 years, positioned at 6 o'clock within the running seconds subdial

About This Timepiece

• Bracelet Sizing — Complimentary bracelet sizing included with every purchase. Contact us with your wrist measurement and we'll have it ready before shipping.
• Authenticity Guarantee — Every watch is thoroughly inspected and authenticated by our team of certified horologists. 100% authentic, guaranteed.
• Warranty — New model watches include a 1-year mechanical warranty covering manufacturing defects. All watches include our confidence guarantee.
• Shipping — Free insured overnight FedEx shipping on all orders. Fully insured, signature required, discreet packaging.

Contact Us

Questions about this timepiece? Our specialists are available to help.
Phone/Text: (310) 363-0481
Email: chris@chronocandy.com

Chrono Candy is an independent luxury watch dealer and is not affiliated with Rolex S.A., Rolex USA, Patek Philippe, Audemars Piguet, Cartier, Omega, Tudor, or any brands listed.