The Patek Philippe Annual Calendar Regulator 5235R is a striking expression of modern haute horlogerie, combining avant-garde design with the timeless craftsmanship of Patek Philippe.

This exceptional timepiece features a two-tone graphite and black dial with a distinctive regulator-style display, offering a bold yet refined aesthetic rarely seen in traditional complications. Housed in an elegant 18K rose gold case and paired with a black leather strap, the 5235R delivers both visual sophistication and mechanical excellence.

At its heart is the in-house Caliber 31-260 REG QA, equipped with a 22K gold microrotor, Spiromax® balance spring, and finished to the prestigious Patek Seal standard. The movement provides a 38 to 48-hour power reserve, ensuring reliable performance with exceptional precision.

Key Features:

• Prestigious Patek Philippe Annual Calendar Regulator
• Unique regulator-style dial layout
• Elegant 18K rose gold case
• Sophisticated graphite and black dial
• Annual calendar complication
• In-house Caliber 31-260 REG QA
• 22K gold microrotor
• Spiromax® balance spring
• 38–48 hour power reserve
• Sapphire display caseback
• Black leather strap

Avant-Garde Regulator Design

The Patek Philippe Annual Calendar Regulator 5235R stands apart with its rare regulator display, where hours, minutes, and seconds are separated into individual subdials—an arrangement traditionally used in precision clocks.

The graphite and black dial enhances this layout with a contemporary, technical aesthetic, reflecting the brand’s ability to innovate while maintaining classical roots.

Advanced Annual Calendar Mechanism

The annual calendar complication automatically distinguishes between 30- and 31-day months, requiring adjustment only once per year. This highly practical complication is a signature innovation of Patek Philippe, combining usability with horological prestige.

In-House Mechanical Excellence

The Caliber 31-260 REG QA is a testament to Patek Philippe’s technical mastery.

Highlights include:

• 22K gold microrotor for efficient winding
• Spiromax® silicon balance spring for enhanced precision
• Finishing certified by the Patek Seal
• Power reserve of 38–48 hours
• Visible through the sapphire caseback, the movement showcases exquisite finishing and attention to detail.

Product Specifications:

• Brand: Patek Philippe
• Model: Patek Philippe Annual Calendar Regulator 5235R
• Reference: 5235R
• Case Material: 18K Rose Gold
• Case Back: Sapphire Display
• Dial: Graphite and Black
• Dial Layout: Regulator Display
• Strap: Black Leather
• Movement: Automatic
• Calibre: 31-260 REG QA
• Power Reserve: 38–48 Hours

Functions:
• Regulator display (separate hours, minutes, seconds)
• Annual calendar (day, date, month)

Why Collectors Love the 5235R

• Rare regulator-style annual calendar

• Prestigious Patek Philippe complication

• Modern, avant-garde design

• Advanced microrotor movement

• Highly collectible reference