18K Rose Gold & White Gold – Dual Time Zone Alarm • 42.2 mm • Caliber AL 30-660 S C FUS

The Patek Philippe Alarm Travel Time 5520RG-001 is a horological masterpiece that harmoniously combines two highly practical complications, a mechanical alarm and a dual time zone travel function, within a beautifully refined yet robust rose gold case. This innovative Grand Complication represents a modern evolution of Patek Philippe’s watchmaking excellence, designed for the global traveler who demands both mechanical ingenuity and everyday usability.

Encased in warm, richly polished 18K rose gold & white gold, the 5520R measures 42.2 mm in diameter, a size that balances presence with wearable elegance. Its distinctive cushion-shaped profile and bold lugs lend the watch a contemporary character while retaining the classical refinement that defines Patek Philippe. The screw-down crown and substantial case construction provide reliable water resistance and durability for daily wear.

The dial is a study in functional sophistication. Sunburst gray, charcoal gray white gold applied numerals with luminescent coating. Local time hand: charcoal gray white gold sword-style with luminescent coating. Home time hand: charcoal gray white gold skeletonized sword-style. At the center are two skeletonized hour hands, local time (solid) and home time (skeleton), enabling intuitive dual time zone reading. A large subsidiary dial at 6 o’clock houses the combined alarm power reserve and alarm on/off indicator, while a second subdial at 12 o’clock positions the day/night indicators for home and local time. A date aperture at 3 o’clock completes the practical layout. Bold baton indexes and luminescent details ensure excellent readability in all lighting conditions.

Powering the watch is Patek Philippe’s innovative Caliber AL 30-660 S C FUS, an automatic movement meticulously developed to support the unique combination of complications. The movement features:

A mechanical alarm mechanism with hammer striking on a traditional gong, capable of both audible and silent alarm signaling

A dual time zone system, adjustable from the crown and pushers, with independent local hour hand setting

Central hours and minutes, seconds, date at 3 o’clock

Day/night indicators for both home and local time

An alarm power reserve indicator

Automatic winding with a 21K gold rotor visible through the sapphire caseback

Approximately 48 hours of power reserve

The craftsmanship and finishing of Caliber AL 30-660 S C FUS reflect Patek Philippe’s exacting standards, blending functionality with aesthetic harmony.

The watch is secured by a large-square-scale black alligator strap with a fold-over clasp in 18K rose gold, ensuring a comfortable fit while matching the dial’s sporty yet elegant personality