Patek Philippe Complications Flyback Chronograph Annual Calendar Stainless Steel Olive Green Dial | 5905/1A-001

Launched in 2014 as Patek Philippe's first steel sports complication, the reference 5905/1A-001 represented a paradigm shift for the Geneva manufacture's traditionally precious metal-focused approach to complex timepieces. This 42mm steel case flyback chronograph annual calendar pairs the brand's technical prowess with an uncommonly robust construction philosophy, housing these intricate complications within a brushed and polished stainless steel architecture. The olive green dial creates subtle visual depth through its sunburst finish, while maintaining the classical tri-compax chronograph layout that defines this groundbreaking reference within the Complications collection.

Key Features & Specifications

• Annual Calendar Complication — Automatically adjusts for months with 30 and 31 days, requiring manual correction only once per year at the end of February
• Flyback Chronograph Function — Instantaneous reset and restart capability allows for immediate timing of successive events without stopping the chronograph
• Olive Green Sunburst Dial — Distinctive military-inspired colorway with applied index hour markers and three subsidiary dials displaying chronograph minutes, running seconds, and day/night indication
• 42mm Steel Case Construction — Brushed and polished stainless steel case with transparent sapphire crystal caseback revealing the automatic movement
• Integrated Steel Bracelet — Five-link steel bracelet with polished center links and brushed outer links, secured by Patek Philippe's signature fold-over clasp
• Caliber CH 28-520 IRM QA 24H Movement — Self-winding mechanical movement with column-wheel chronograph control and annual calendar module
• Multi-Function Display — Month and leap year indication at 3 o'clock, date aperture at 6 o'clock, and day display integrated 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.