Patek Philippe Complications 5960/01G-001 Annual Calendar Chronograph White Gold

Technical Specifications – Patek Philippe Chronograph Annual Calendar 5960/01g

• Case: 40.5mm diameter x 13.5mm height – 18k white gold, fully polished – sapphire crystal on both sides – 30m water resistant
• Movement: calibre CH 28-520 IRM QA 24H, in-house – certified by the Patek Philippe Seal – automatic, integrated chronograph – 4Hz frequency – up to 55h power reserve
• Functions: hours, minutes, annual calendar (day, date, month), power reserve, day-and-night indication, flyback chronograph with central second and monocounter at 6 (60-minute and 12-hour)
• Strap: calfskin brown strap with white gold clevis prong buckle
• Reference: 5960/01g-001

Under the sapphire caseback is the well-known calibre CH 28-520 IRM QA 24H. This was the first integrated automatic chronograph movement of Patek, and since its introduction, it has also made its way into the Nautilus (although without the calendar indications). This movement has a modern architecture, with the chronograph and the self-winding mechanism being fully part of the movement (and not added on top of an existing movement, in a modular way). The chronograph features a flyback function, and is controlled by a column-wheel and a vertical clutch. It has a 4Hz frequency and it boasts between 45-55 hours of power reserve, depending on how long the chronograph is kept running.

Patek’s traditional finishing has been applied, meaning polished bevelled angles, circular Geneva Stripes, polished screw-heads and slots and circular graining on the main plate. It is certified by the Patek Philippe Seal, that also certifies the accuracy of the watch (average of -3/+2 seconds a day). All the calendar indications, meaning the corrections for the day, the date and the month, are done via recessed pushers placed on the left side of the case.